{"title":"Milltek Audi RS3 Performance Exhaust Systems","description":"\u003cp\u003eMilltek parts for the Audi RS3 run from the 8P Sportback S tronic (2011 to 2012) through the 8V Sportback, before and after the facelift, and the 8V Saloon, to the 400PS 8Y Saloon and Sportback. Choose from cat-back and filter-back systems, sports cat, HJS ECE and de-cat downpipes, catalyst bypass parts, Active Valve Control and Maxton rear diffusers. Every listing names the body style and whether the car has an OPF\/GPF. See the \u003ca href=\"\/collections\/audi-performance-exhaust-systems\"\u003eMilltek Audi range\u003c\/a\u003e for other models.\u003c\/p\u003e","products":[{"product_id":"milltek-active-valve-control-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17","title":"Milltek Active Valve Control Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+","description":"\u003ch2\u003eMilltek Active Valve Control for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards) – Switchable Exhaust Volume\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's active valve control system for the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models. It adds an electronically-operated valve to an existing Milltek system, opening a second, less restrictive path through the silencer that stays closed for a refined, near-standard tone around town and opens under load or at the press of a button for a louder, more open sound.\u003c\/p\u003e\n\u003cp\u003eIt's the option to go for if you want the flexibility to keep the car quiet for early starts and long motorway runs, then switch to the full exhaust note whenever you actually want to hear it, without swapping any hardware.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Active Valve Control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback (8V MQB - Pre Facelift Only) (2015-2017)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (Non-OPF\/GPF Models) (2016 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (OPF\/GPF Models) (2019 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e Audi RS3 Saloon OPF\/GPF Models models, or any model not listed above.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eThis involves connecting to the car's wiring and exhaust valves, so we recommend fitting by a specialist familiar with the car's electrics.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eHow is it controlled?\u003c\/h3\u003e\n\u003cp\u003eDepending on the version, it is controlled using a phone app.\u003c\/p\u003e\n\u003ch3\u003eWill the car be louder all the time?\u003c\/h3\u003e\n\u003cp\u003eNo. With the valve closed the tone stays close to standard; open it when you want the full exhaust note.\u003c\/p\u003e\n\u003ch3\u003eWhat does it work with?\u003c\/h3\u003e\n\u003cp\u003eMilltek notes: \"with Apple \u0026amp; Android Bluetooth App support - Fits both OE and Milltek Sport Cat Back Systems\". Check this matches your current exhaust before ordering.\u003c\/p\u003e\n\u003ch3\u003eIs this a complete exhaust system?\u003c\/h3\u003e\n\u003cp\u003eNo. It is designed to be used with the system or factory parts described above, rather than as a complete exhaust on its own.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392681292161,"sku":"MIL-SSXAU746","price":660.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU746_1_edaff8cf-ff5d-4424-b5cf-d88dc75ddc76.jpg?v=1791890558"},{"product_id":"milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17","title":"Milltek Decat Downpipe Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+","description":"\u003ch2\u003eMilltek Downpipe \u0026amp; De-cat for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards) – Maximum Flow, Motorsport Use\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's large-bore downpipe and de-cat for the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models. It replaces the factory downpipe with a larger-bore pipe and removes the catalytic converter entirely, clearing the single most restrictive point in the exhaust for the biggest flow gain available at this position in the system. It's usually fitted alongside a Stage 2 remap, since the ECU needs to be told to expect the different readings the lambda sensors give once the cat's gone. It's offered in versions to suit the factory or a Milltek system, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's built for owners already committed to a serious power upgrade rather than a casual bolt-on, so pair it with the matching Milltek cat-back system for the full effect.\u003c\/p\u003e\n\u003cp\u003eBecause it removes the cat, it's intended for off-road and competition use. A de-catted car will fail an MOT emissions test and isn't legal to use on UK roads.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Large-bore Downpipe and De-cat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eRemoves the factory catalyst for maximum flow (off-road and competition use only)\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models (2022 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (Non-OPF\/GPF Models) (2016 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot every version fits every car in this list. Check the fitment shown for the option you select.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models, which needs the \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eThis work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-active-valve-control-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Active Valve Control Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eNo. Removing the catalyst means the car will fail an MOT emissions test, so it is for off-road and competition use only.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eA suitable remap is strongly recommended, as the engine management needs to account for the change in flow and sensor readings. Speak to your tuner before fitting.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Some are made for the factory (OE) system and others for the Milltek cat-back, so check the notes for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eWill removing the cat cause a warning light?\u003c\/h3\u003e\n\u003cp\u003eWithout suitable software it is likely to, as the ECU expects the readings a working catalyst gives. This is why Milltek pairs it with a remap.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Fits both OE and Milltek Sport Cat Back Systems","offer_id":56392681357697,"sku":"MIL-SSXAU727","price":778.13,"currency_code":"GBP","in_stock":true},{"title":"V2 Downpipe with Decat - Fits both OE and Milltek Sport Cat Back Systems","offer_id":56392681390465,"sku":"MIL-SSXAU888","price":1092.82,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU727_1_01ac3c39-86be-4c2d-8d9b-3b2be93f5e3f.jpg?v=1791890562"},{"product_id":"milltek-hjs-tuning-ece-downpipes-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17","title":"Milltek HJS Tuning ECE Downpipes Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+","description":"\u003ch2\u003eMilltek HJS Tuning ECE Downpipes for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards) – Improved Flow, Sports Catalyst\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's HJS Tuning ECE downpipe set for the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models. These replace the factory downpipes with HJS high-flow sports catalysts that carry full ECE type-approval, so you get a genuine flow improvement over the restrictive factory units without taking the car outside emissions compliance.\u003c\/p\u003e\n\u003cp\u003eThey're aimed at drivers who want more from the downpipes than the standard units allow, but need the car to stay legally usable on the road and pass an emissions test, which a straight de-cat pipe won't do.\u003c\/p\u003e\n\u003cp\u003eBecause they're type-approved, these can be run on a car that's used on the road, unlike a straight de-cat pipe.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e HJS Tuning ECE Downpipes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 63.55mm (2.5\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Time:\u003c\/strong\u003e approx. 3 to 3.5 hours (Milltek figure)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e63.55mm (2.5\") pipework\u003c\/li\u003e\n\u003cli\u003eHigh-flow sports catalyst flows better than the dense factory unit while still treating exhaust gases\u003c\/li\u003e\n\u003cli\u003eEC approved\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (Non-OPF\/GPF Models) (2016 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models, which needs the \u003ca href=\"\/products\/milltek-sports-cat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; Sports Cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes a fitting time of approx. 3 to 3.5 hours. Before ordering, note: ECE Approved fits to Milltek Sport \u0026amp; OE Catback Systems. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-active-valve-control-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Active Valve Control Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-sports-cat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; Sports Cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eEvery version of this part is listed by Milltek as EC approved.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eA suitable remap is strongly recommended, as the engine management needs to account for the change in flow and sensor readings. Speak to your tuner before fitting.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists it for use with the factory (OE) exhaust system.\u003c\/p\u003e\n\u003ch3\u003eHow is a sports cat different from a de-cat?\u003c\/h3\u003e\n\u003cp\u003eA sports cat still contains a catalyst, just a less dense one that flows better than the factory unit. A de-cat removes the catalyst completely.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes approx. 3 to 3.5 hours.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392681488769,"sku":"MIL-SSXAU771","price":2762.26,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU1053_1_786ff446-2eb2-4a66-a6a8-e2d27d0606c4.jpg?v=1791890566"},{"product_id":"milltek-sports-cat-downpipe-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17","title":"Milltek Sports Cat Downpipe Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+","description":"\u003ch2\u003eMilltek Downpipe \u0026amp; Sports Cat for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards) – Improved Flow, Sports Catalyst\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's large-bore downpipe with hi-flow sports cat for the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models. It replaces the restrictive factory downpipe with a larger-bore pipe fitted with a high-flow sports catalyst in place of the standard unit, using a less dense substrate that flows significantly better than the factory cat while still treating the exhaust gases passing through it.\u003c\/p\u003e\n\u003cp\u003eIt sits between a stock downpipe and a full de-cat: a genuine flow gain suited to a Stage 1 or Stage 2 remap, without giving up the catalyst entirely the way a de-cat pipe does.\u003c\/p\u003e\n\u003cp\u003eIn the UK, a replacement catalyst on a car first registered from 1 March 2001 needs ECE R103 type-approval to be road legal, so check the EC Approved line in the specification for the version you choose.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Large Bore Downpipe and Hi-Flow Sports Cat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eHigh-flow sports catalyst flows better than the dense factory unit while still treating exhaust gases\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models (2022 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (Non-OPF\/GPF Models) (2016 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models, which needs the \u003ca href=\"\/products\/milltek-sports-cat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; Sports Cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eThis work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-active-valve-control-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Active Valve Control Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-sports-cat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; Sports Cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eMilltek lists this as a race part without EC approval, so it is intended for off-road and competition use.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eA suitable remap is strongly recommended, as the engine management needs to account for the change in flow and sensor readings. Speak to your tuner before fitting.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Some are made for the factory (OE) system and others for the Milltek cat-back, so check the notes for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eHow is a sports cat different from a de-cat?\u003c\/h3\u003e\n\u003cp\u003eA sports cat still contains a catalyst, just a less dense one that flows better than the factory unit. A de-cat removes the catalyst completely.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392681554305,"sku":"MIL-SSXAU726","price":1349.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU726_1_b03dba18-9a05-42f6-a195-abfc3c044b4d.jpg?v=1791890568"},{"product_id":"milltek-secondary-catalyst-bypass-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17","title":"Milltek Secondary Catalyst Bypass Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+","description":"\u003ch2\u003eMilltek Secondary Catalyst Bypass for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards) – Maximum Flow, Motorsport Use\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's large-bore downpipe and de-cat for the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models. It replaces the factory downpipe with a larger-bore pipe and removes the catalytic converter entirely, clearing the single most restrictive point in the exhaust for the biggest flow gain available at this position in the system. It's usually fitted alongside a Stage 2 remap, since the ECU needs to be told to expect the different readings the lambda sensors give once the cat's gone.\u003c\/p\u003e\n\u003cp\u003eIt's built for owners already committed to a serious power upgrade rather than a casual bolt-on, so pair it with the matching Milltek cat-back system for the full effect.\u003c\/p\u003e\n\u003cp\u003eBecause it removes the cat, it's intended for off-road and competition use. A de-catted car will fail an MOT emissions test and isn't legal to use on UK roads.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Secondary Catalyst Bypass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eRemoves the factory catalyst for maximum flow (off-road and competition use only)\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models (2022 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback (8V MQB - Pre Facelift Only) (2015-2017)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (Non-OPF\/GPF Models) (2016 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models, which needs the \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, note: Fits both OE and Milltek Sport Cat Back Systems, Not required on Turbo Back System *** Not all vehicles come equipped with secondary cats, visual check recommended before ordering ***. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-active-valve-control-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Active Valve Control Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eNo. Removing the catalyst means the car will fail an MOT emissions test, so it is for off-road and competition use only.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eA suitable remap is strongly recommended, as the engine management needs to account for the change in flow and sensor readings. Speak to your tuner before fitting.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Some are made for the factory (OE) system and others for the Milltek cat-back, so check the notes for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eWill removing the cat cause a warning light?\u003c\/h3\u003e\n\u003cp\u003eWithout suitable software it is likely to, as the ECU expects the readings a working catalyst gives. This is why Milltek pairs it with a remap.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392681587073,"sku":"MIL-SSXAU588","price":227.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU588_1_8153880c-8e2b-4ad6-95fe-37cac09c725c.jpg?v=1791890568"},{"product_id":"milltek-cat-back-exhaust-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17","title":"Milltek Cat Back Exhaust Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+","description":"\u003ch2\u003eMilltek Cat-back Exhaust for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards) – Sharper Sound, Reduced Back Pressure\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's cat-back system for the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models. It replaces everything from the factory catalytic converter rearward with wider-bore pipework, a re-profiled mid-pipe and silencers tuned specifically for this platform, cutting back pressure and sharpening the exhaust note. The factory catalytic converter stays in place, so the car's emissions hardware is left as standard. It's offered in non-resonated or resonated EC approved versions and 8 tailpipe finishes, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's aimed at owners who want a noticeably different sound and a genuine, if modest, flow improvement without touching anything upstream of the cat: a straightforward bolt-on that doesn't need a remap or any other supporting mods to enjoy.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Cat-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003eReplaces the standard exhaust from the catalytic converter back, so the factory cat is retained\u003c\/li\u003e\n\u003cli\u003eChoice of 8 tailpipe finishes: Burnt Titanium, Cerakote Black, Polished, Titanium, Burnt Titanium Oval, Cerakote Black Oval, Polished Oval, Titanium Oval\u003c\/li\u003e\n\u003cli\u003eEC approved versions available\u003c\/li\u003e\n\u003cli\u003eResonated (quieter) or non-resonated (louder) versions\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e Audi RS3 Saloon OPF\/GPF Models models, or any model not listed above.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eThe fitting time varies by version; see the specification table for the option you choose. We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-active-valve-control-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Active Valve Control Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between the resonated and non-resonated versions?\u003c\/h3\u003e\n\u003cp\u003eThe resonated version adds extra silencing for a quieter, more refined tone. The non-resonated version leaves it out, so it is louder and more aggressive.\u003c\/p\u003e\n\u003ch3\u003eWhich tailpipe finishes are available?\u003c\/h3\u003e\n\u003cp\u003eYou can choose from: Burnt Titanium, Cerakote Black, Polished, Titanium, Burnt Titanium Oval, Cerakote Black Oval, Polished Oval, Titanium Oval. The finish is cosmetic and does not change the sound.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eSome versions are EC approved; check the EC Approved line in the specification for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory catalytic converter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory catalytic converter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory catalytic converter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Milltek's fitting time for each option is shown in its specification table.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Non-Resonated \/ Burnt Titanium","offer_id":56392681619841,"sku":"MIL-SSXAU896","price":2618.93,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Cerakote Black","offer_id":56392681652609,"sku":"MIL-SSXAU893","price":2438.6,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Polished","offer_id":56392681685377,"sku":"MIL-SSXAU894","price":2346.62,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Titanium","offer_id":56392681718145,"sku":"MIL-SSXAU895","price":2564.25,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ Burnt Titanium","offer_id":56392681750913,"sku":"MIL-SSXAU985","price":2675.23,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ Cerakote Black","offer_id":56392681783681,"sku":"MIL-SSXAU982","price":2494.92,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ Polished","offer_id":56392681816449,"sku":"MIL-SSXAU983","price":2402.93,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ Titanium","offer_id":56392681849217,"sku":"MIL-SSXAU984","price":2620.57,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Burnt Titanium","offer_id":56392681881985,"sku":"MIL-SSXAU892","price":2875.91,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Cerakote Black","offer_id":56392681914753,"sku":"MIL-SSXAU889","price":2695.59,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Polished","offer_id":56392681947521,"sku":"MIL-SSXAU890","price":2603.6,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Titanium","offer_id":56392681980289,"sku":"MIL-SSXAU891","price":2821.24,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Burnt Titanium Oval","offer_id":56392682013057,"sku":"MIL-SSXAU800","price":2103.18,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Cerakote Black Oval","offer_id":56392682045825,"sku":"MIL-SSXAU740","price":1922.87,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Polished Oval","offer_id":56392682078593,"sku":"MIL-SSXAU741","price":1830.87,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Titanium Oval","offer_id":56392682111361,"sku":"MIL-SSXAU799","price":2048.51,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Burnt Titanium Oval","offer_id":56392682144129,"sku":"MIL-SSXAU802","price":2339.65,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Cerakote Black Oval","offer_id":56392682176897,"sku":"MIL-SSXAU739","price":2159.33,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Polished Oval","offer_id":56392682209665,"sku":"MIL-SSXAU738","price":2067.34,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Titanium Oval","offer_id":56392682242433,"sku":"MIL-SSXAU801","price":2284.97,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU893_1.jpg?v=1791890605"},{"product_id":"milltek-active-valve-control-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19","title":"Milltek Active Valve Control Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+","description":"\u003ch2\u003eMilltek Active Valve Control for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards) – Switchable Exhaust Volume\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's active valve control system for the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models. It adds an electronically-operated valve to an existing Milltek system, opening a second, less restrictive path through the silencer that stays closed for a refined, near-standard tone around town and opens under load or at the press of a button for a louder, more open sound.\u003c\/p\u003e\n\u003cp\u003eIt's the option to go for if you want the flexibility to keep the car quiet for early starts and long motorway runs, then switch to the full exhaust note whenever you actually want to hear it, without swapping any hardware.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Active Valve Control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback (8V MQB - Pre Facelift Only) (2015-2017)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (Non-OPF\/GPF Models) (2016 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (OPF\/GPF Models) (2019 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e Audi RS3 Saloon OPF\/GPF Models models, or any model not listed above.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eThis involves connecting to the car's wiring and exhaust valves, so we recommend fitting by a specialist familiar with the car's electrics.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eHow is it controlled?\u003c\/h3\u003e\n\u003cp\u003eDepending on the version, it is controlled using a phone app.\u003c\/p\u003e\n\u003ch3\u003eWill the car be louder all the time?\u003c\/h3\u003e\n\u003cp\u003eNo. With the valve closed the tone stays close to standard; open it when you want the full exhaust note.\u003c\/p\u003e\n\u003ch3\u003eWhat does it work with?\u003c\/h3\u003e\n\u003cp\u003eMilltek notes: \"with Apple \u0026amp; Android Bluetooth App support - Fits both OE and Milltek Sport Cat Back Systems\". Check this matches your current exhaust before ordering.\u003c\/p\u003e\n\u003ch3\u003eIs this a complete exhaust system?\u003c\/h3\u003e\n\u003cp\u003eNo. It is designed to be used with the system or factory parts described above, rather than as a complete exhaust on its own.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392682373505,"sku":"MIL-SSXAU746","price":660.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU746_1_08e82286-dad2-4ab0-9447-a93d54997554.jpg?v=1791890575"},{"product_id":"milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19","title":"Milltek Decat Downpipe Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+","description":"\u003ch2\u003eMilltek Downpipe \u0026amp; De-cat for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models (2019 onwards) – Maximum Flow, Motorsport Use\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's large-bore downpipe and de-cat for the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models. It replaces the factory downpipe with a larger-bore pipe and removes the catalytic converter entirely, clearing the single most restrictive point in the exhaust for the biggest flow gain available at this position in the system. It's usually fitted alongside a Stage 2 remap, since the ECU needs to be told to expect the different readings the lambda sensors give once the cat's gone. It's offered in a choice of cat (De-cat, De-cat with GPF Delete), so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's built for owners already committed to a serious power upgrade rather than a casual bolt-on, so pair it with the matching Milltek cat-back system for the full effect.\u003c\/p\u003e\n\u003cp\u003eBecause it removes the cat, it's intended for off-road and competition use. A de-catted car will fail an MOT emissions test and isn't legal to use on UK roads.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Large-bore Downpipe and De-cat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eRemoves the factory catalyst for maximum flow (off-road and competition use only)\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RSQ3 2.5T Sportback \u0026amp; SUV (OPF\/GPF Equipped Models Only) (2020 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (OPF\/GPF Models) (2019 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot every version fits every car in this list. Check the fitment shown for the option you select.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models, which needs the \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eSome versions: Fits both OE and Milltek Sport Cat Back Systems - Requires Stage 2 ECU Software - NOTE to Customers - Due to Design of Turbo Waste Gate fitting a decat can cause metallic rattle to be heard more than the OE Cat Downpipe. Some versions: V2 Downpipe with Decat \u0026amp; OPF\/GPF Bypass - Fits both OE and Milltek Sport Cat Back Systems - NOTE to Customers - Due to Design of Turbo Waste Gate fitting a decat can cause metallic rattle to be heard more than the OE Cat Downpipe - Requires stage 2 ECU software. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-filter-back-exhaust-audi-rs3-sportback-8y-opf-gpf-21\"\u003eMilltek Filter-back Exhaust Audi RS3 Sportback 8Y OPF\/GPF 21+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eNo. Removing the catalyst means the car will fail an MOT emissions test, so it is for off-road and competition use only.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek notes: \"Fits both OE and Milltek Sport Cat Back Systems - Requires Stage 2 ECU Software - NOTE to Customers - Due to Design of Turbo Waste Gate fitting a decat can cause metallic rattle to be heard more than the OE Cat Downpipe\". Without suitable software the engine management is likely to log faults.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Some are made for the factory (OE) system and others for the Milltek cat-back, so check the notes for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eWill removing the cat cause a warning light?\u003c\/h3\u003e\n\u003cp\u003eWithout suitable software it is likely to, as the ECU expects the readings a working catalyst gives. This is why Milltek pairs it with a remap.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"De-cat","offer_id":56392682406273,"sku":"MIL-SSXAU817","price":836.95,"currency_code":"GBP","in_stock":true},{"title":"De-cat with GPF Delete","offer_id":56392682439041,"sku":"MIL-SSXAU897","price":1175.63,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU817_1_06d737c3-2992-4193-bda8-8e5adf75f8a1.jpg?v=1791890580"},{"product_id":"milltek-sports-cat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19","title":"Milltek Sports Cat Downpipe Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+","description":"\u003ch2\u003eMilltek Downpipe \u0026amp; Sports Cat for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models (2019 onwards) – Improved Flow, Sports Catalyst\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's large-bore downpipe with hi-flow sports cat for the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models. It replaces the restrictive factory downpipe with a larger-bore pipe fitted with a high-flow sports catalyst in place of the standard unit, using a less dense substrate that flows significantly better than the factory cat while still treating the exhaust gases passing through it.\u003c\/p\u003e\n\u003cp\u003eIt sits between a stock downpipe and a full de-cat: a genuine flow gain suited to a Stage 1 or Stage 2 remap, without giving up the catalyst entirely the way a de-cat pipe does.\u003c\/p\u003e\n\u003cp\u003eIn the UK, a replacement catalyst on a car first registered from 1 March 2001 needs ECE R103 type-approval to be road legal, so check the EC Approved line in the specification for the version you choose.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Large Bore Downpipe and Hi-Flow Sports Cat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eHigh-flow sports catalyst flows better than the dense factory unit while still treating exhaust gases\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RSQ3 2.5T Sportback \u0026amp; SUV (OPF\/GPF Equipped Models Only) (2020 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (OPF\/GPF Models) (2019 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models, which needs the \u003ca href=\"\/products\/milltek-hjs-tuning-ece-downpipes-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek HJS Tuning ECE Downpipes Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, note: Fits both OE and Milltek Sport Cat Back Systems - Requires Stage 2 ECU Software. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-filter-back-exhaust-audi-rs3-sportback-8y-opf-gpf-21\"\u003eMilltek Filter-back Exhaust Audi RS3 Sportback 8Y OPF\/GPF 21+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-hjs-tuning-ece-downpipes-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek HJS Tuning ECE Downpipes Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eMilltek lists this as a race part without EC approval, so it is intended for off-road and competition use.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek notes: \"Fits both OE and Milltek Sport Cat Back Systems - Requires Stage 2 ECU Software\". Without suitable software the engine management is likely to log faults.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Some are made for the factory (OE) system and others for the Milltek cat-back, so check the notes for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eHow is a sports cat different from a de-cat?\u003c\/h3\u003e\n\u003cp\u003eA sports cat still contains a catalyst, just a less dense one that flows better than the factory unit. A de-cat removes the catalyst completely.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392682471809,"sku":"MIL-SSXAU818","price":1522.71,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU818_1_4156d3d2-7315-4c5f-97ca-4bcbca034a55.jpg?v=1791890579"},{"product_id":"milltek-cat-back-exhaust-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19","title":"Milltek Cat Back Exhaust Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+","description":"\u003ch2\u003eMilltek Cat-back Exhaust for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards) – Sharper Sound, Reduced Back Pressure\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's cat-back system for the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models. It replaces everything from the factory catalytic converter rearward with wider-bore pipework, a re-profiled mid-pipe and silencers tuned specifically for this platform, cutting back pressure and sharpening the exhaust note. The factory catalytic converter stays in place, so the car's emissions hardware is left as standard. It's offered in non-resonated or resonated EC approved versions and 8 tailpipe finishes, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's aimed at owners who want a noticeably different sound and a genuine, if modest, flow improvement without touching anything upstream of the cat: a straightforward bolt-on that doesn't need a remap or any other supporting mods to enjoy.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Cat-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003eReplaces the standard exhaust from the catalytic converter back, so the factory cat is retained\u003c\/li\u003e\n\u003cli\u003eChoice of 8 tailpipe finishes: Burnt Titanium, Cerakote Black, Polished, Titanium, Burnt Titanium Oval, Cerakote Black Oval, Polished Oval, Titanium Oval\u003c\/li\u003e\n\u003cli\u003eEC approved versions available\u003c\/li\u003e\n\u003cli\u003eResonated (quieter) or non-resonated (louder) versions\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e Audi RS3 Saloon OPF\/GPF Models models, or any model not listed above.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eThe fitting time varies by version; see the specification table for the option you choose. We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-active-valve-control-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Active Valve Control Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between the resonated and non-resonated versions?\u003c\/h3\u003e\n\u003cp\u003eThe resonated version adds extra silencing for a quieter, more refined tone. The non-resonated version leaves it out, so it is louder and more aggressive.\u003c\/p\u003e\n\u003ch3\u003eWhich tailpipe finishes are available?\u003c\/h3\u003e\n\u003cp\u003eYou can choose from: Burnt Titanium, Cerakote Black, Polished, Titanium, Burnt Titanium Oval, Cerakote Black Oval, Polished Oval, Titanium Oval. The finish is cosmetic and does not change the sound.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eSome versions are EC approved; check the EC Approved line in the specification for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory catalytic converter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory catalytic converter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory catalytic converter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Milltek's fitting time for each option is shown in its specification table.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Non-Resonated \/ Burnt Titanium","offer_id":56392683323777,"sku":"MIL-SSXAU896","price":2618.93,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Cerakote Black","offer_id":56392683356545,"sku":"MIL-SSXAU893","price":2438.6,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Polished","offer_id":56392683389313,"sku":"MIL-SSXAU894","price":2346.62,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Titanium","offer_id":56392683422081,"sku":"MIL-SSXAU895","price":2564.25,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ Burnt Titanium","offer_id":56392683454849,"sku":"MIL-SSXAU985","price":2675.23,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ Cerakote Black","offer_id":56392683487617,"sku":"MIL-SSXAU982","price":2494.92,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ Polished","offer_id":56392683520385,"sku":"MIL-SSXAU983","price":2402.93,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ Titanium","offer_id":56392683553153,"sku":"MIL-SSXAU984","price":2620.57,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Burnt Titanium","offer_id":56392683585921,"sku":"MIL-SSXAU892","price":2875.91,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Cerakote Black","offer_id":56392683618689,"sku":"MIL-SSXAU889","price":2695.59,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Polished","offer_id":56392683651457,"sku":"MIL-SSXAU890","price":2603.6,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Titanium","offer_id":56392683684225,"sku":"MIL-SSXAU891","price":2821.24,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Burnt Titanium Oval","offer_id":56392683716993,"sku":"MIL-SSXAU800","price":2103.18,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Cerakote Black Oval","offer_id":56392683749761,"sku":"MIL-SSXAU740","price":1922.87,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Polished Oval","offer_id":56392683782529,"sku":"MIL-SSXAU741","price":1830.87,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Titanium Oval","offer_id":56392683815297,"sku":"MIL-SSXAU799","price":2048.51,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Burnt Titanium Oval","offer_id":56392683848065,"sku":"MIL-SSXAU802","price":2339.65,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Cerakote Black Oval","offer_id":56392683880833,"sku":"MIL-SSXAU739","price":2159.33,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Polished Oval","offer_id":56392683913601,"sku":"MIL-SSXAU738","price":2067.34,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Titanium Oval","offer_id":56392683946369,"sku":"MIL-SSXAU801","price":2284.97,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU893_1_4a0195c4-3758-49dd-a16f-bbeed2d84cf4.jpg?v=1791890619"},{"product_id":"milltek-active-valve-control-audi-rs3-saloon-400ps-8y-mqb-evo-non-opf-gpf-22","title":"Milltek Active Valve Control Audi RS3 Saloon 400PS 8Y MQB EVO Non-OPF\/GPF 22+","description":"\u003ch2\u003eMilltek Active Valve Control for Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models (2022 onwards) – Switchable Exhaust Volume\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's active valve control system for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models. It adds an electronically-operated valve to an existing Milltek system, opening a second, less restrictive path through the silencer that stays closed for a refined, near-standard tone around town and opens under load or at the press of a button for a louder, more open sound. It's offered in left hand drive or right hand drive versions, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's the option to go for if you want the flexibility to keep the car quiet for early starts and long motorway runs, then switch to the full exhaust note whenever you actually want to hear it, without swapping any hardware.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Active Valve Control\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models (2022 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e Audi RS3 Saloon\/Sedan OPF\/GPF Models models, or any model not listed above.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eThe fitting time varies by version; see the specification table for the option you choose. Some versions: Plug \u0026amp; Play Remote Control System for OE \u0026amp; Milltek Sport Exhausts - For Left Hand Drive Vehicles Only. Some versions: Plug \u0026amp; Play Remote Control System for OE \u0026amp; Milltek Sport Exhausts - For Right Hand Drive Vehicles Only. This involves connecting to the car's wiring and exhaust valves, so we recommend fitting by a specialist familiar with the car's electrics.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-filter-back-exhaust-audi-rs3-saloon-400ps-8y-mqb-evo-non-opf-gpf-22\"\u003eMilltek Filter-back Exhaust Audi RS3 Saloon 400PS 8Y MQB EVO Non-OPF\/GPF 22+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eHow is it controlled?\u003c\/h3\u003e\n\u003cp\u003eDepending on the version, it is controlled using a remote control.\u003c\/p\u003e\n\u003ch3\u003eWill the car be louder all the time?\u003c\/h3\u003e\n\u003cp\u003eNo. With the valve closed the tone stays close to standard; open it when you want the full exhaust note.\u003c\/p\u003e\n\u003ch3\u003eWhat does it work with?\u003c\/h3\u003e\n\u003cp\u003eMilltek notes: \"Plug \u0026amp; Play Remote Control System for OE \u0026amp; Milltek Sport Exhausts - For Left Hand Drive Vehicles Only\". Check this matches your current exhaust before ordering.\u003c\/p\u003e\n\u003ch3\u003eIs this a complete exhaust system?\u003c\/h3\u003e\n\u003cp\u003eNo. It is designed to be used with the system or factory parts described above, rather than as a complete exhaust on its own.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Milltek's fitting time for each option is shown in its specification table.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Left Hand Drive","offer_id":56392683979137,"sku":"MIL-SSXAU972","price":314.23,"currency_code":"GBP","in_stock":true},{"title":"Right Hand Drive","offer_id":56392684011905,"sku":"MIL-SSXAU973","price":314.23,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU972_1.jpg?v=1791890590"},{"product_id":"milltek-decat-downpipe-audi-rs3-saloon-400ps-8y-mqb-evo-non-opf-gpf-22","title":"Milltek Decat Downpipe Audi RS3 Saloon 400PS 8Y MQB EVO Non-OPF\/GPF 22+","description":"\u003ch2\u003eMilltek Downpipe \u0026amp; De-cat for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards) – Maximum Flow, Motorsport Use\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's large-bore downpipe and de-cat for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models. It replaces the factory downpipe with a larger-bore pipe and removes the catalytic converter entirely, clearing the single most restrictive point in the exhaust for the biggest flow gain available at this position in the system. It's usually fitted alongside a Stage 2 remap, since the ECU needs to be told to expect the different readings the lambda sensors give once the cat's gone. It's offered in fits both OE and milltek sport cat back systems NOTE to customers due to design of turbo waste gate fitting a decat can cause metallic rattle to be heard more than the OE cat downpipe or V2 downpipe with decat fits both OE and milltek sport cat back systems NOTE to customers due to design of turbo waste gate fitting a decat can cause metallic rattle to be heard more than the OE cat downpipe versions, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's built for owners already committed to a serious power upgrade rather than a casual bolt-on, so pair it with the matching Milltek cat-back system for the full effect.\u003c\/p\u003e\n\u003cp\u003eBecause it removes the cat, it's intended for off-road and competition use. A de-catted car will fail an MOT emissions test and isn't legal to use on UK roads.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Large-bore Downpipe and De-cat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eRemoves the factory catalyst for maximum flow (off-road and competition use only)\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models (2022 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (Non-OPF\/GPF Models) (2016 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot every version fits every car in this list. Check the fitment shown for the option you select.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models, which needs the \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eThis work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-active-valve-control-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Active Valve Control Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eNo. Removing the catalyst means the car will fail an MOT emissions test, so it is for off-road and competition use only.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eA suitable remap is strongly recommended, as the engine management needs to account for the change in flow and sensor readings. Speak to your tuner before fitting.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Some are made for the factory (OE) system and others for the Milltek cat-back, so check the notes for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eWill removing the cat cause a warning light?\u003c\/h3\u003e\n\u003cp\u003eWithout suitable software it is likely to, as the ECU expects the readings a working catalyst gives. This is why Milltek pairs it with a remap.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Fits both OE and Milltek Sport Cat Back Systems","offer_id":56392684044673,"sku":"MIL-SSXAU727","price":778.13,"currency_code":"GBP","in_stock":true},{"title":"V2 Downpipe with Decat - Fits both OE and Milltek Sport Cat Back Systems","offer_id":56392684077441,"sku":"MIL-SSXAU888","price":1092.82,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU727_1_0927beee-f596-4e77-88de-3a9a9f25d404.jpg?v=1791890592"},{"product_id":"milltek-sports-cat-downpipe-audi-rs3-saloon-400ps-8y-mqb-evo-non-opf-gpf-22","title":"Milltek Sports Cat Downpipe Audi RS3 Saloon 400PS 8Y MQB EVO Non-OPF\/GPF 22+","description":"\u003ch2\u003eMilltek Downpipe \u0026amp; Sports Cat for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards) – Improved Flow, Sports Catalyst\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's large-bore downpipe with hi-flow sports cat for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models. It replaces the restrictive factory downpipe with a larger-bore pipe fitted with a high-flow sports catalyst in place of the standard unit, using a less dense substrate that flows significantly better than the factory cat while still treating the exhaust gases passing through it.\u003c\/p\u003e\n\u003cp\u003eIt sits between a stock downpipe and a full de-cat: a genuine flow gain suited to a Stage 1 or Stage 2 remap, without giving up the catalyst entirely the way a de-cat pipe does.\u003c\/p\u003e\n\u003cp\u003eIn the UK, a replacement catalyst on a car first registered from 1 March 2001 needs ECE R103 type-approval to be road legal, so check the EC Approved line in the specification for the version you choose.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Large Bore Downpipe and Hi-Flow Sports Cat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eHigh-flow sports catalyst flows better than the dense factory unit while still treating exhaust gases\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models (2022 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (Non-OPF\/GPF Models) (2016 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models, which needs the \u003ca href=\"\/products\/milltek-sports-cat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; Sports Cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eThis work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-active-valve-control-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Active Valve Control Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-sports-cat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; Sports Cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eMilltek lists this as a race part without EC approval, so it is intended for off-road and competition use.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eA suitable remap is strongly recommended, as the engine management needs to account for the change in flow and sensor readings. Speak to your tuner before fitting.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Some are made for the factory (OE) system and others for the Milltek cat-back, so check the notes for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eHow is a sports cat different from a de-cat?\u003c\/h3\u003e\n\u003cp\u003eA sports cat still contains a catalyst, just a less dense one that flows better than the factory unit. A de-cat removes the catalyst completely.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392684208513,"sku":"MIL-SSXAU726","price":1349.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU726_1_fad1720e-0ea9-4783-8387-38fe2ba93ecc.jpg?v=1791890600"},{"product_id":"milltek-secondary-catalyst-bypass-audi-rs3-saloon-400ps-8y-mqb-evo-non-opf-gpf-22","title":"Milltek Secondary Catalyst Bypass Audi RS3 Saloon 400PS 8Y MQB EVO Non-OPF\/GPF 22+","description":"\u003ch2\u003eMilltek Secondary Catalyst Bypass for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards) – Maximum Flow, Motorsport Use\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's large-bore downpipe and de-cat for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models. It replaces the factory downpipe with a larger-bore pipe and removes the catalytic converter entirely, clearing the single most restrictive point in the exhaust for the biggest flow gain available at this position in the system. It's usually fitted alongside a Stage 2 remap, since the ECU needs to be told to expect the different readings the lambda sensors give once the cat's gone.\u003c\/p\u003e\n\u003cp\u003eIt's built for owners already committed to a serious power upgrade rather than a casual bolt-on, so pair it with the matching Milltek cat-back system for the full effect.\u003c\/p\u003e\n\u003cp\u003eBecause it removes the cat, it's intended for off-road and competition use. A de-catted car will fail an MOT emissions test and isn't legal to use on UK roads.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Secondary Catalyst Bypass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 70mm (2.76\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e70mm (2.76\") pipework\u003c\/li\u003e\n\u003cli\u003eRemoves the factory catalyst for maximum flow (off-road and competition use only)\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models (2022 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback (8V MQB - Pre Facelift Only) (2015-2017)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (Non-OPF\/GPF Models) (2016 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models, which needs the \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, note: Fits both OE and Milltek Sport Cat Back Systems, Not required on Turbo Back System. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-active-valve-control-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Active Valve Control Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eNo. Removing the catalyst means the car will fail an MOT emissions test, so it is for off-road and competition use only.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eA suitable remap is strongly recommended, as the engine management needs to account for the change in flow and sensor readings. Speak to your tuner before fitting.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Some are made for the factory (OE) system and others for the Milltek cat-back, so check the notes for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eWill removing the cat cause a warning light?\u003c\/h3\u003e\n\u003cp\u003eWithout suitable software it is likely to, as the ECU expects the readings a working catalyst gives. This is why Milltek pairs it with a remap.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392684241281,"sku":"MIL-SSXAU588","price":227.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU588_1_ebb9d21a-09fe-4ccd-a72b-b14fb0eb1f2e.jpg?v=1791890602"},{"product_id":"milltek-filter-back-exhaust-audi-rs3-saloon-400ps-8y-mqb-evo-non-opf-gpf-22","title":"Milltek Filter Back Exhaust Audi RS3 Saloon 400PS 8Y MQB EVO Non-OPF\/GPF 22+","description":"\u003ch2\u003eMilltek Filter-back Exhaust for Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models (2022 onwards) – Sharper Sound, Filter Retained\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's particulate filter-back system for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models. It replaces everything downstream of the factory diesel or petrol particulate filter with wider-bore pipework and re-tuned silencers, cutting back pressure and sharpening the exhaust note. The filter itself is left exactly where the manufacturer fitted it, so emissions equipment is unaffected. It's offered in non-resonated, race non-resonated or resonated EC approved versions, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's the right choice if you want a sportier sound and a genuine, if modest, flow improvement on a filter-equipped car, without going anywhere near the parts of the system that keep it emissions-compliant.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Particulate Filter-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 80mm (3.15\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Time:\u003c\/strong\u003e approx. 1 to 1.5 hours (Milltek figure)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e80mm (3.15\") pipework\u003c\/li\u003e\n\u003cli\u003eFits behind the factory particulate filter, which stays in place\u003c\/li\u003e\n\u003cli\u003eEC approved versions available\u003c\/li\u003e\n\u003cli\u003eResonated (quieter) or non-resonated (louder) versions\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models (2022 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e Audi RS3 Saloon\/Sedan OPF\/GPF Models models, or any model not listed above.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes a fitting time of approx. 1 to 1.5 hours. We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-active-valve-control-audi-rs3-saloon-400ps-8y-mqb-evo-non-opf-gpf-22\"\u003eMilltek Active Valve Control Audi RS3 Saloon 400PS 8Y MQB EVO Non-OPF\/GPF 22+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between the resonated and non-resonated versions?\u003c\/h3\u003e\n\u003cp\u003eThe resonated version adds extra silencing for a quieter, more refined tone. The non-resonated version leaves it out, so it is louder and more aggressive. Race versions are the loudest and are intended for track use.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eSome versions are EC approved; check the EC Approved line in the specification for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory particulate filter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory particulate filter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory particulate filter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes approx. 1 to 1.5 hours.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Non-Resonated","offer_id":56392684372353,"sku":"MIL-SSXAU967","price":2493.4,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated","offer_id":56392684405121,"sku":"MIL-SSXAU974","price":2549.71,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved","offer_id":56392684437889,"sku":"MIL-SSXAU966","price":2750.38,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU967_1_3d359718-e061-42bc-acaa-b603c831346c.jpg?v=1791890614"},{"product_id":"milltek-active-valve-control-audi-rs3-saloon-400ps-8y-mqb-evo-opf-gpf-21","title":"Milltek Active Valve Control Audi RS3 Saloon 400PS 8Y MQB EVO OPF\/GPF 21+","description":"\u003ch2\u003eMilltek Active Valve Control for Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models (2022 onwards) – Switchable Exhaust Volume\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's active valve control system for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models. It adds an electronically-operated valve to an existing Milltek system, opening a second, less restrictive path through the silencer that stays closed for a refined, near-standard tone around town and opens under load or at the press of a button for a louder, more open sound. It's offered in left hand drive or right hand drive versions, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's the option to go for if you want the flexibility to keep the car quiet for early starts and long motorway runs, then switch to the full exhaust note whenever you actually want to hear it, without swapping any hardware.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Active Valve Control\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models (2022 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e Audi RS3 Saloon\/Sedan OPF\/GPF Models models, or any model not listed above.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eThe fitting time varies by version; see the specification table for the option you choose. Some versions: Plug \u0026amp; Play Remote Control System for OE \u0026amp; Milltek Sport Exhausts - For Left Hand Drive Vehicles Only. Some versions: Plug \u0026amp; Play Remote Control System for OE \u0026amp; Milltek Sport Exhausts - For Right Hand Drive Vehicles Only. This involves connecting to the car's wiring and exhaust valves, so we recommend fitting by a specialist familiar with the car's electrics.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-filter-back-exhaust-audi-rs3-saloon-400ps-8y-mqb-evo-non-opf-gpf-22\"\u003eMilltek Filter-back Exhaust Audi RS3 Saloon 400PS 8Y MQB EVO Non-OPF\/GPF 22+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eHow is it controlled?\u003c\/h3\u003e\n\u003cp\u003eDepending on the version, it is controlled using a remote control.\u003c\/p\u003e\n\u003ch3\u003eWill the car be louder all the time?\u003c\/h3\u003e\n\u003cp\u003eNo. With the valve closed the tone stays close to standard; open it when you want the full exhaust note.\u003c\/p\u003e\n\u003ch3\u003eWhat does it work with?\u003c\/h3\u003e\n\u003cp\u003eMilltek notes: \"Plug \u0026amp; Play Remote Control System for OE \u0026amp; Milltek Sport Exhausts - For Left Hand Drive Vehicles Only\". Check this matches your current exhaust before ordering.\u003c\/p\u003e\n\u003ch3\u003eIs this a complete exhaust system?\u003c\/h3\u003e\n\u003cp\u003eNo. It is designed to be used with the system or factory parts described above, rather than as a complete exhaust on its own.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Milltek's fitting time for each option is shown in its specification table.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Left Hand Drive","offer_id":56392684568961,"sku":"MIL-SSXAU972","price":314.23,"currency_code":"GBP","in_stock":true},{"title":"Right Hand Drive","offer_id":56392684601729,"sku":"MIL-SSXAU973","price":314.23,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU972_1_f2c4a726-3852-40a1-88de-62792e58068c.jpg?v=1791890613"},{"product_id":"milltek-decat-downpipe-audi-rs3-saloon-400ps-8y-mqb-evo-opf-gpf-21","title":"Milltek Decat Downpipe Audi RS3 Saloon 400PS 8Y MQB EVO OPF\/GPF 21+","description":"\u003ch2\u003eMilltek Downpipe \u0026amp; De-cat for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models (2019 onwards) – Maximum Flow, Motorsport Use\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's large-bore downpipe and de-cat for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models. It replaces the factory downpipe with a larger-bore pipe and removes the catalytic converter entirely, clearing the single most restrictive point in the exhaust for the biggest flow gain available at this position in the system. It's usually fitted alongside a Stage 2 remap, since the ECU needs to be told to expect the different readings the lambda sensors give once the cat's gone. It's offered in a choice of cat (De-cat, De-cat with GPF Delete), so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's built for owners already committed to a serious power upgrade rather than a casual bolt-on, so pair it with the matching Milltek cat-back system for the full effect.\u003c\/p\u003e\n\u003cp\u003eBecause it removes the cat, it's intended for off-road and competition use. A de-catted car will fail an MOT emissions test and isn't legal to use on UK roads.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Large-bore Downpipe and De-cat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eRemoves the factory catalyst for maximum flow (off-road and competition use only)\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RSQ3 2.5T Sportback \u0026amp; SUV (OPF\/GPF Equipped Models Only) (2020 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (OPF\/GPF Models) (2019 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot every version fits every car in this list. Check the fitment shown for the option you select.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models, which needs the \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eSome versions: Fits both OE and Milltek Sport Cat Back Systems - Requires Stage 2 ECU Software - NOTE to Customers - Due to Design of Turbo Waste Gate fitting a decat can cause metallic rattle to be heard more than the OE Cat Downpipe. Some versions: V2 Downpipe with Decat \u0026amp; OPF\/GPF Bypass - Fits both OE and Milltek Sport Cat Back Systems - NOTE to Customers - Due to Design of Turbo Waste Gate fitting a decat can cause metallic rattle to be heard more than the OE Cat Downpipe - Requires stage 2 ECU software. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-filter-back-exhaust-audi-rs3-sportback-8y-opf-gpf-21\"\u003eMilltek Filter-back Exhaust Audi RS3 Sportback 8Y OPF\/GPF 21+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eNo. Removing the catalyst means the car will fail an MOT emissions test, so it is for off-road and competition use only.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek notes: \"Fits both OE and Milltek Sport Cat Back Systems - Requires Stage 2 ECU Software - NOTE to Customers - Due to Design of Turbo Waste Gate fitting a decat can cause metallic rattle to be heard more than the OE Cat Downpipe\". Without suitable software the engine management is likely to log faults.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Some are made for the factory (OE) system and others for the Milltek cat-back, so check the notes for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eWill removing the cat cause a warning light?\u003c\/h3\u003e\n\u003cp\u003eWithout suitable software it is likely to, as the ECU expects the readings a working catalyst gives. This is why Milltek pairs it with a remap.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"De-cat","offer_id":56392684634497,"sku":"MIL-SSXAU817","price":836.95,"currency_code":"GBP","in_stock":true},{"title":"De-cat with GPF Delete","offer_id":56392684667265,"sku":"MIL-SSXAU897","price":1175.63,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU817_1_bef3f423-bab9-419b-97e8-1483b2a2ad19.jpg?v=1791890619"},{"product_id":"milltek-sports-cat-downpipe-audi-rs3-saloon-400ps-8y-mqb-evo-opf-gpf-21","title":"Milltek Sports Cat Downpipe Audi RS3 Saloon 400PS 8Y MQB EVO OPF\/GPF 21+","description":"\u003ch2\u003eMilltek Downpipe \u0026amp; Sports Cat for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models (2019 onwards) – Improved Flow, Sports Catalyst\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's large-bore downpipe with hi-flow sports cat for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models. It replaces the restrictive factory downpipe with a larger-bore pipe fitted with a high-flow sports catalyst in place of the standard unit, using a less dense substrate that flows significantly better than the factory cat while still treating the exhaust gases passing through it.\u003c\/p\u003e\n\u003cp\u003eIt sits between a stock downpipe and a full de-cat: a genuine flow gain suited to a Stage 1 or Stage 2 remap, without giving up the catalyst entirely the way a de-cat pipe does.\u003c\/p\u003e\n\u003cp\u003eIn the UK, a replacement catalyst on a car first registered from 1 March 2001 needs ECE R103 type-approval to be road legal, so check the EC Approved line in the specification for the version you choose.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Large Bore Downpipe and Hi-Flow Sports Cat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eHigh-flow sports catalyst flows better than the dense factory unit while still treating exhaust gases\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RSQ3 2.5T Sportback \u0026amp; SUV (OPF\/GPF Equipped Models Only) (2020 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (OPF\/GPF Models) (2019 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models, which needs the \u003ca href=\"\/products\/milltek-hjs-tuning-ece-downpipes-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek HJS Tuning ECE Downpipes Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, note: Fits both OE and Milltek Sport Cat Back Systems - Requires Stage 2 ECU Software. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-filter-back-exhaust-audi-rs3-sportback-8y-opf-gpf-21\"\u003eMilltek Filter-back Exhaust Audi RS3 Sportback 8Y OPF\/GPF 21+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-hjs-tuning-ece-downpipes-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek HJS Tuning ECE Downpipes Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eMilltek lists this as a race part without EC approval, so it is intended for off-road and competition use.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek notes: \"Fits both OE and Milltek Sport Cat Back Systems - Requires Stage 2 ECU Software\". Without suitable software the engine management is likely to log faults.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Some are made for the factory (OE) system and others for the Milltek cat-back, so check the notes for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eHow is a sports cat different from a de-cat?\u003c\/h3\u003e\n\u003cp\u003eA sports cat still contains a catalyst, just a less dense one that flows better than the factory unit. A de-cat removes the catalyst completely.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392684700033,"sku":"MIL-SSXAU818","price":1522.71,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU818_1.jpg?v=1791890624"},{"product_id":"milltek-filter-back-exhaust-audi-rs3-saloon-400ps-8y-mqb-evo-opf-gpf-21","title":"Milltek Filter Back Exhaust Audi RS3 Saloon 400PS 8Y MQB EVO OPF\/GPF 21+","description":"\u003ch2\u003eMilltek Filter-back Exhaust for Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models (2022 onwards) – Sharper Sound, Filter Retained\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's particulate filter-back system for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models. It replaces everything downstream of the factory diesel or petrol particulate filter with wider-bore pipework and re-tuned silencers, cutting back pressure and sharpening the exhaust note. The filter itself is left exactly where the manufacturer fitted it, so emissions equipment is unaffected. It's offered in non-resonated, race non-resonated or resonated EC approved versions, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's the right choice if you want a sportier sound and a genuine, if modest, flow improvement on a filter-equipped car, without going anywhere near the parts of the system that keep it emissions-compliant.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Particulate Filter-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 80mm (3.15\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Time:\u003c\/strong\u003e approx. 1 to 1.5 hours (Milltek figure)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e80mm (3.15\") pipework\u003c\/li\u003e\n\u003cli\u003eFits behind the factory particulate filter, which stays in place\u003c\/li\u003e\n\u003cli\u003eEC approved versions available\u003c\/li\u003e\n\u003cli\u003eResonated (quieter) or non-resonated (louder) versions\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models (2022 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e Audi RS3 Saloon\/Sedan OPF\/GPF Models models, or any model not listed above.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes a fitting time of approx. 1 to 1.5 hours. We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-active-valve-control-audi-rs3-saloon-400ps-8y-mqb-evo-non-opf-gpf-22\"\u003eMilltek Active Valve Control Audi RS3 Saloon 400PS 8Y MQB EVO Non-OPF\/GPF 22+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between the resonated and non-resonated versions?\u003c\/h3\u003e\n\u003cp\u003eThe resonated version adds extra silencing for a quieter, more refined tone. The non-resonated version leaves it out, so it is louder and more aggressive. Race versions are the loudest and are intended for track use.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eSome versions are EC approved; check the EC Approved line in the specification for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory particulate filter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory particulate filter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory particulate filter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes approx. 1 to 1.5 hours.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Non-Resonated","offer_id":56392684732801,"sku":"MIL-SSXAU967","price":2493.4,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated","offer_id":56392684765569,"sku":"MIL-SSXAU974","price":2549.71,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved","offer_id":56392684798337,"sku":"MIL-SSXAU966","price":2750.38,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU967_1.jpg?v=1791890629"},{"product_id":"milltek-primary-hi-flow-sports-cat-turbo-elbow-audi-rs3-sportback-8v-mqb-pre-facelift-15-17","title":"Milltek Primary Hi-Flow Sports Cat Turbo Elbow Audi RS3 Sportback 8V MQB Pre-Facelift 15-17","description":"\u003ch2\u003eMilltek Primary Hi-Flow Sports Cat \u0026amp; Turbo Elbow for Audi RS3 Sportback (8V MQB - Pre Facelift Only) (2015-2017) – Improved Flow, Sports Catalyst\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's large-bore downpipe with hi-flow sports cat for the Audi RS3 Sportback (8V MQB - Pre Facelift Only). It replaces the restrictive factory downpipe with a larger-bore pipe fitted with a high-flow sports catalyst in place of the standard unit, using a less dense substrate that flows significantly better than the factory cat while still treating the exhaust gases passing through it.\u003c\/p\u003e\n\u003cp\u003eIt sits between a stock downpipe and a full de-cat: a genuine flow gain suited to a Stage 1 or Stage 2 remap, without giving up the catalyst entirely the way a de-cat pipe does.\u003c\/p\u003e\n\u003cp\u003eIn the UK, a replacement catalyst on a car first registered from 1 March 2001 needs ECE R103 type-approval to be road legal, so check the EC Approved line in the specification for the version you choose.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Primary Hi-Flow Sports Cat and Turbo Elbow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eHigh-flow sports catalyst flows better than the dense factory unit while still treating exhaust gases\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eAudi RS3 Sportback (8V MQB - Pre Facelift Only) (2015-2017)\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e any model, engine or body style not listed above. Check your car before ordering.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, note: Fits with Milltek and OE Cat Back Systems (Required Stage 2 ECU Remap). This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-sportback-8v-mqb-pre-facelift-15-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Sportback 8V MQB Pre Facelift 15-17\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eMilltek lists this as a race part without EC approval, so it is intended for off-road and competition use.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eA suitable remap is strongly recommended, as the engine management needs to account for the change in flow and sensor readings. Speak to your tuner before fitting.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists it for use with the factory (OE) exhaust system.\u003c\/p\u003e\n\u003ch3\u003eHow is a sports cat different from a de-cat?\u003c\/h3\u003e\n\u003cp\u003eA sports cat still contains a catalyst, just a less dense one that flows better than the factory unit. A de-cat removes the catalyst completely.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392684831105,"sku":"MIL-SSXAU587","price":1369.13,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU587_1.jpg?v=1791890629"},{"product_id":"milltek-primary-catalyst-bypass-pipe-turbo-elbow-audi-rs3-sportback-8v-mqb-pre-facelift-15-17","title":"Milltek Primary Catalyst Bypass Pipe Turbo Elbow Audi RS3 Sportback 8V MQB Pre-Facelift 15-17","description":"\u003ch2\u003eMilltek Primary Catalyst Bypass Pipe \u0026amp; Turbo Elbow for Audi RS3 Sportback (8V MQB - Pre Facelift Only) (2015-2017) – Maximum Flow, Motorsport Use\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's primary catalyst bypass pipe and turbo elbow for the pre-facelift Audi RS3 Sportback 8V MQB. It replaces the primary catalyst section with a straight-through pipe and matching turbo elbow, fitting alongside a Milltek or OE cat-back system for the biggest flow gain available at this position. It requires a supporting Stage 2 ECU remap.\u003c\/p\u003e\n\u003cp\u003eIt's built for owners already committed to a serious power upgrade rather than a casual bolt-on.\u003c\/p\u003e\n\u003cp\u003eBecause it removes the primary catalyst, it's intended for off-road and competition use. A car set up this way will fail an MOT emissions test and isn't legal to use on UK roads.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Primary Catalyst Bypass Pipe and Turbo Elbow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eRemoves the factory catalyst for maximum flow (off-road and competition use only)\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eAudi RS3 Sportback (8V MQB - Pre Facelift Only) (2015-2017)\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Sportback S tronic (8P), which needs the \u003ca href=\"\/products\/milltek-secondary-catalyst-bypass-audi-rs3-sportback-s-tronic-8p-11-12\"\u003eMilltek Secondary Catalyst Bypass Audi RS3 Sportback S tronic 8P 11-12\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, note: Fits with Milltek and OE Cat Back Systems (Required Stage 2 ECU Remap). This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-sportback-8v-mqb-pre-facelift-15-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Sportback 8V MQB Pre Facelift 15-17\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Sportback S tronic (8P)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-secondary-catalyst-bypass-audi-rs3-sportback-s-tronic-8p-11-12\"\u003eMilltek Secondary Catalyst Bypass Audi RS3 Sportback S tronic 8P 11-12\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eNo. Removing the catalyst means the car will fail an MOT emissions test, so it is for off-road and competition use only.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eA suitable remap is strongly recommended, as the engine management needs to account for the change in flow and sensor readings. Speak to your tuner before fitting.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists it for use with the factory (OE) exhaust system.\u003c\/p\u003e\n\u003ch3\u003eWill removing the cat cause a warning light?\u003c\/h3\u003e\n\u003cp\u003eWithout suitable software it is likely to, as the ECU expects the readings a working catalyst gives. This is why Milltek pairs it with a remap.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392684863873,"sku":"MIL-SSXAU593","price":797.44,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU593_1.jpg?v=1791890631"},{"product_id":"milltek-active-valve-control-audi-rs3-sportback-8v-mqb-pre-facelift-15-17","title":"Milltek Active Valve Control Audi RS3 Sportback 8V MQB Pre-Facelift 15-17","description":"\u003ch2\u003eMilltek Active Valve Control for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards) – Switchable Exhaust Volume\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's active valve control system for the Audi RS3 Sportback (8V MQB - Pre Facelift Only). It adds an electronically-operated valve to an existing Milltek system, opening a second, less restrictive path through the silencer that stays closed for a refined, near-standard tone around town and opens under load or at the press of a button for a louder, more open sound.\u003c\/p\u003e\n\u003cp\u003eIt's the option to go for if you want the flexibility to keep the car quiet for early starts and long motorway runs, then switch to the full exhaust note whenever you actually want to hear it, without swapping any hardware.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Active Valve Control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback (8V MQB - Pre Facelift Only) (2015-2017)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (Non-OPF\/GPF Models) (2016 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (OPF\/GPF Models) (2019 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e Audi RS3 Saloon OPF\/GPF Models models, or any model not listed above.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eThis involves connecting to the car's wiring and exhaust valves, so we recommend fitting by a specialist familiar with the car's electrics.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eHow is it controlled?\u003c\/h3\u003e\n\u003cp\u003eDepending on the version, it is controlled using a phone app.\u003c\/p\u003e\n\u003ch3\u003eWill the car be louder all the time?\u003c\/h3\u003e\n\u003cp\u003eNo. With the valve closed the tone stays close to standard; open it when you want the full exhaust note.\u003c\/p\u003e\n\u003ch3\u003eWhat does it work with?\u003c\/h3\u003e\n\u003cp\u003eMilltek notes: \"with Apple \u0026amp; Android Bluetooth App support - Fits both OE and Milltek Sport Cat Back Systems\". Check this matches your current exhaust before ordering.\u003c\/p\u003e\n\u003ch3\u003eIs this a complete exhaust system?\u003c\/h3\u003e\n\u003cp\u003eNo. It is designed to be used with the system or factory parts described above, rather than as a complete exhaust on its own.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392684896641,"sku":"MIL-SSXAU746","price":660.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU746_1_d955de03-53fc-4666-a326-d1e2d8f5bb91.jpg?v=1791890634"},{"product_id":"milltek-secondary-catalyst-bypass-audi-rs3-sportback-8v-mqb-pre-facelift-15-17","title":"Milltek Secondary Catalyst Bypass Audi RS3 Sportback 8V MQB Pre-Facelift 15-17","description":"\u003ch2\u003eMilltek Secondary Catalyst Bypass for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards) – Maximum Flow, Motorsport Use\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's large-bore downpipe and de-cat for the Audi RS3 Sportback (8V MQB - Pre Facelift Only). It replaces the factory downpipe with a larger-bore pipe and removes the catalytic converter entirely, clearing the single most restrictive point in the exhaust for the biggest flow gain available at this position in the system. It's usually fitted alongside a Stage 2 remap, since the ECU needs to be told to expect the different readings the lambda sensors give once the cat's gone.\u003c\/p\u003e\n\u003cp\u003eIt's built for owners already committed to a serious power upgrade rather than a casual bolt-on, so pair it with the matching Milltek cat-back system for the full effect.\u003c\/p\u003e\n\u003cp\u003eBecause it removes the cat, it's intended for off-road and competition use. A de-catted car will fail an MOT emissions test and isn't legal to use on UK roads.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Secondary Catalyst Bypass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eRemoves the factory catalyst for maximum flow (off-road and competition use only)\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models (2022 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback (8V MQB - Pre Facelift Only) (2015-2017)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (Non-OPF\/GPF Models) (2016 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models, which needs the \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, note: Fits both OE and Milltek Sport Cat Back Systems, Not required on Turbo Back System. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-active-valve-control-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Active Valve Control Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eNo. Removing the catalyst means the car will fail an MOT emissions test, so it is for off-road and competition use only.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eA suitable remap is strongly recommended, as the engine management needs to account for the change in flow and sensor readings. Speak to your tuner before fitting.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Some are made for the factory (OE) system and others for the Milltek cat-back, so check the notes for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eWill removing the cat cause a warning light?\u003c\/h3\u003e\n\u003cp\u003eWithout suitable software it is likely to, as the ECU expects the readings a working catalyst gives. This is why Milltek pairs it with a remap.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392685748609,"sku":"MIL-SSXAU588","price":227.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU588_1_26409d3f-0201-49a9-afd2-ad5f9b4a2273.jpg?v=1791890639"},{"product_id":"milltek-cat-back-exhaust-audi-rs3-sportback-8v-mqb-pre-facelift-15-17","title":"Milltek Cat Back Exhaust Audi RS3 Sportback 8V MQB Pre-Facelift 15-17","description":"\u003ch2\u003eMilltek Cat-back Exhaust for Audi RS3 Sportback (8V MQB - Pre Facelift Only) (2015-2017) – Sharper Sound, Reduced Back Pressure\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's cat-back system for the Audi RS3 Sportback (8V MQB - Pre Facelift Only). It replaces everything from the factory catalytic converter rearward with wider-bore pipework, a re-profiled mid-pipe and silencers tuned specifically for this platform, cutting back pressure and sharpening the exhaust note. The factory catalytic converter stays in place, so the car's emissions hardware is left as standard. It's offered in non-resonated, race non-resonated, resonated or resonated EC approved versions and 4 tailpipe finishes, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's aimed at owners who want a noticeably different sound and a genuine, if modest, flow improvement without touching anything upstream of the cat: a straightforward bolt-on that doesn't need a remap or any other supporting mods to enjoy.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Cat-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003eReplaces the standard exhaust from the catalytic converter back, so the factory cat is retained\u003c\/li\u003e\n\u003cli\u003eChoice of 4 tailpipe finishes: Cerakote Black, Polished, Cerakote Black Oval, Polished Oval\u003c\/li\u003e\n\u003cli\u003eEC approved versions available\u003c\/li\u003e\n\u003cli\u003eResonated (quieter) or non-resonated (louder) versions\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eAudi RS3 Sportback (8V MQB - Pre Facelift Only) (2015-2017)\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models, which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-sportback-400ps-8v-facelift-non-opf-gpf-17-18\"\u003eMilltek Cat-back Exhaust Audi RS3 Sportback 400PS 8V Facelift Non-OPF\/GPF 17-18\u003c\/a\u003e; the Audi RS3 Sportback S tronic (8P), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-sportback-s-tronic-8p-11-12\"\u003eMilltek Cat-back Exhaust Audi RS3 Sportback S tronic 8P 11-12\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eThe fitting time varies by version; see the specification table for the option you choose. We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-primary-hi-flow-sports-cat-turbo-elbow-audi-rs3-sportback-8v-mqb-pre-facelift-15-17\"\u003eMilltek Primary Hi-Flow Sports Cat \u0026amp; Turbo Elbow Audi RS3 Sportback 8V MQB Pre Facelift 15-17\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between the resonated and non-resonated versions?\u003c\/h3\u003e\n\u003cp\u003eThe resonated version adds extra silencing for a quieter, more refined tone. The non-resonated version leaves it out, so it is louder and more aggressive. Race versions are the loudest and are intended for track use.\u003c\/p\u003e\n\u003ch3\u003eWhich tailpipe finishes are available?\u003c\/h3\u003e\n\u003cp\u003eYou can choose from: Cerakote Black, Polished, Cerakote Black Oval, Polished Oval. The finish is cosmetic and does not change the sound.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-sportback-400ps-8v-facelift-non-opf-gpf-17-18\"\u003eMilltek Cat-back Exhaust Audi RS3 Sportback 400PS 8V Facelift Non-OPF\/GPF 17-18\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eSome versions are EC approved; check the EC Approved line in the specification for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory catalytic converter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory catalytic converter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory catalytic converter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Milltek's fitting time for each option is shown in its specification table.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Non-Resonated \/ Cerakote Black","offer_id":56392685846913,"sku":"MIL-SSXAU971","price":2409.92,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Polished","offer_id":56392685879681,"sku":"MIL-SSXAU970","price":2316.35,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ Cerakote Black Oval","offer_id":56392685912449,"sku":"MIL-SSXAU977","price":2466.23,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ Polished Oval","offer_id":56392685945217,"sku":"MIL-SSXAU976","price":2372.66,"currency_code":"GBP","in_stock":true},{"title":"Resonated \/ Cerakote Black Oval","offer_id":56392685977985,"sku":"MIL-SSXAU968","price":2666.91,"currency_code":"GBP","in_stock":true},{"title":"Resonated \/ Polished Oval","offer_id":56392686010753,"sku":"MIL-SSXAU969","price":2573.33,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Cerakote Black Oval","offer_id":56392686043521,"sku":"MIL-SSXAU591","price":1638.72,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Polished Oval","offer_id":56392686076289,"sku":"MIL-SSXAU592","price":1545.15,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Cerakote Black Oval","offer_id":56392686109057,"sku":"MIL-SSXAU590","price":1875.19,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Polished Oval","offer_id":56392686141825,"sku":"MIL-SSXAU589","price":1781.61,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU591_2.jpg?v=1791890656"},{"product_id":"milltek-maxton-rear-diffuser-audi-rs3-sportback-400ps-8v-mqb-facelift-non-opf-gpf-17-18","title":"Milltek Maxton Rear Diffuser Audi RS3 Sportback 400PS 8V MQB Facelift Non-OPF\/GPF 17-18","description":"\u003ch2\u003eMilltek Maxton Rear Diffuser for Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018) – Genuine Milltek Fitment Part\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's diffuser for the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models. It's a rear diffuser, produced in collaboration with Maxton Design, styled to complement the matching Milltek exhaust tailpipes rather than change how the exhaust itself performs. It's offered in 2 tailpipe finishes, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Additional parts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Time:\u003c\/strong\u003e approx. 2 to 2.5 hours (Milltek figure)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eGenuine Milltek part designed to work with the matching Milltek system\u003c\/li\u003e\n\u003cli\u003eChoice of 2 tailpipe finishes: GT-100 Black, GT-100 Polished\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e Audi RS3 Sportback OPF\/GPF Models models, or any model not listed above.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes a fitting time of approx. 2 to 2.5 hours. Some versions: Maxton x Milltek Quad Outlet Rear Diffuser - Gloss Diffuser - Quad GT-100 Black Trims - Fits with any Milltek Sport Cat Back as upgrade kit or replaces trim option on new systems. Some versions: Maxton x Milltek Quad Outlet Rear Diffuser - Gloss Diffuser - Quad GT-100 Polished Trims - Fits with any Milltek Sport Cat Back as upgrade kit or replaces trim option on new systems. We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-sportback-400ps-8v-facelift-non-opf-gpf-17-18\"\u003eMilltek Cat-back Exhaust Audi RS3 Sportback 400PS 8V Facelift Non-OPF\/GPF 17-18\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhich tailpipe finishes are available?\u003c\/h3\u003e\n\u003cp\u003eYou can choose from: GT-100 Black, GT-100 Polished. The finish is cosmetic and does not change the sound.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eMilltek does not list EC approval for this part. Any exhaust used on the road must still meet noise and emissions rules, so check the requirements where you live.\u003c\/p\u003e\n\u003ch3\u003eWhat does it work with?\u003c\/h3\u003e\n\u003cp\u003eMilltek notes: \"Maxton x Milltek Quad Outlet Rear Diffuser - Gloss Diffuser - Quad GT-100 Black Trims - Fits with any Milltek Sport Cat Back as upgrade kit or replaces trim option on new systems\". Check this matches your current exhaust before ordering.\u003c\/p\u003e\n\u003ch3\u003eIs this a complete exhaust system?\u003c\/h3\u003e\n\u003cp\u003eNo. It is designed to be used with the system or factory parts described above, rather than as a complete exhaust on its own.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes approx. 2 to 2.5 hours.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"GT-100 Black","offer_id":56392685781377,"sku":"MIL-SSXAU1028","price":735.69,"currency_code":"GBP","in_stock":true},{"title":"GT-100 Polished","offer_id":56392685814145,"sku":"MIL-SSXAU1029","price":560.7,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU1053_1_5cc22069-178f-45c9-9cb9-17f390b861d5.jpg?v=1791890641"},{"product_id":"milltek-active-valve-control-audi-rs3-sportback-400ps-8v-mqb-facelift-non-opf-gpf-17-18","title":"Milltek Active Valve Control Audi RS3 Sportback 400PS 8V MQB Facelift Non-OPF\/GPF 17-18","description":"\u003ch2\u003eMilltek Active Valve Control for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards) – Switchable Exhaust Volume\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's active valve control system for the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models. It adds an electronically-operated valve to an existing Milltek system, opening a second, less restrictive path through the silencer that stays closed for a refined, near-standard tone around town and opens under load or at the press of a button for a louder, more open sound.\u003c\/p\u003e\n\u003cp\u003eIt's the option to go for if you want the flexibility to keep the car quiet for early starts and long motorway runs, then switch to the full exhaust note whenever you actually want to hear it, without swapping any hardware.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Active Valve Control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback (8V MQB - Pre Facelift Only) (2015-2017)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (Non-OPF\/GPF Models) (2016 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (OPF\/GPF Models) (2019 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e Audi RS3 Saloon OPF\/GPF Models models, or any model not listed above.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eThis involves connecting to the car's wiring and exhaust valves, so we recommend fitting by a specialist familiar with the car's electrics.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eHow is it controlled?\u003c\/h3\u003e\n\u003cp\u003eDepending on the version, it is controlled using a phone app.\u003c\/p\u003e\n\u003ch3\u003eWill the car be louder all the time?\u003c\/h3\u003e\n\u003cp\u003eNo. With the valve closed the tone stays close to standard; open it when you want the full exhaust note.\u003c\/p\u003e\n\u003ch3\u003eWhat does it work with?\u003c\/h3\u003e\n\u003cp\u003eMilltek notes: \"with Apple \u0026amp; Android Bluetooth App support - Fits both OE and Milltek Sport Cat Back Systems\". Check this matches your current exhaust before ordering.\u003c\/p\u003e\n\u003ch3\u003eIs this a complete exhaust system?\u003c\/h3\u003e\n\u003cp\u003eNo. It is designed to be used with the system or factory parts described above, rather than as a complete exhaust on its own.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392686207361,"sku":"MIL-SSXAU746","price":660.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU746_1.jpg?v=1791890643"},{"product_id":"milltek-decat-downpipe-audi-rs3-sportback-400ps-8v-mqb-facelift-non-opf-gpf-17-18","title":"Milltek Decat Downpipe Audi RS3 Sportback 400PS 8V MQB Facelift Non-OPF\/GPF 17-18","description":"\u003ch2\u003eMilltek Downpipe \u0026amp; De-cat for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards) – Maximum Flow, Motorsport Use\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's large-bore downpipe and de-cat for the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models. It replaces the factory downpipe with a larger-bore pipe and removes the catalytic converter entirely, clearing the single most restrictive point in the exhaust for the biggest flow gain available at this position in the system. It's usually fitted alongside a Stage 2 remap, since the ECU needs to be told to expect the different readings the lambda sensors give once the cat's gone. It's offered in fits both OE and milltek sport cat back systems NOTE to customers due to design of turbo waste gate fitting a decat can cause metallic rattle to be heard more than the OE cat downpipe or V2 downpipe with decat fits both OE and milltek sport cat back systems NOTE to customers due to design of turbo waste gate fitting a decat can cause metallic rattle to be heard more than the OE cat downpipe versions, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's built for owners already committed to a serious power upgrade rather than a casual bolt-on, so pair it with the matching Milltek cat-back system for the full effect.\u003c\/p\u003e\n\u003cp\u003eBecause it removes the cat, it's intended for off-road and competition use. A de-catted car will fail an MOT emissions test and isn't legal to use on UK roads.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Large-bore Downpipe and De-cat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eRemoves the factory catalyst for maximum flow (off-road and competition use only)\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models (2022 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (Non-OPF\/GPF Models) (2016 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot every version fits every car in this list. Check the fitment shown for the option you select.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models, which needs the \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eThis work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-active-valve-control-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Active Valve Control Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eNo. Removing the catalyst means the car will fail an MOT emissions test, so it is for off-road and competition use only.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eA suitable remap is strongly recommended, as the engine management needs to account for the change in flow and sensor readings. Speak to your tuner before fitting.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Some are made for the factory (OE) system and others for the Milltek cat-back, so check the notes for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eWill removing the cat cause a warning light?\u003c\/h3\u003e\n\u003cp\u003eWithout suitable software it is likely to, as the ECU expects the readings a working catalyst gives. This is why Milltek pairs it with a remap.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Fits both OE and Milltek Sport Cat Back Systems","offer_id":56392686305665,"sku":"MIL-SSXAU727","price":778.13,"currency_code":"GBP","in_stock":true},{"title":"V2 Downpipe with Decat - Fits both OE and Milltek Sport Cat Back Systems","offer_id":56392686338433,"sku":"MIL-SSXAU888","price":1092.82,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU727_1_f4dba5a8-0e99-408b-8064-4fe92ab1f95e.jpg?v=1791890650"},{"product_id":"milltek-hjs-tuning-ece-downpipes-audi-rs3-sportback-400ps-8v-mqb-facelift-non-opf-gpf-17-18","title":"Milltek HJS Tuning ECE Downpipes Audi RS3 Sportback 400PS 8V MQB Facelift Non-OPF\/GPF 17-18","description":"\u003ch2\u003eMilltek HJS Tuning ECE Downpipes for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards) – Improved Flow, Sports Catalyst\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's HJS Tuning ECE downpipe set for the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models. These replace the factory downpipes with HJS high-flow sports catalysts that carry full ECE type-approval, so you get a genuine flow improvement over the restrictive factory units without taking the car outside emissions compliance.\u003c\/p\u003e\n\u003cp\u003eThey're aimed at drivers who want more from the downpipes than the standard units allow, but need the car to stay legally usable on the road and pass an emissions test, which a straight de-cat pipe won't do.\u003c\/p\u003e\n\u003cp\u003eBecause they're type-approved, these can be run on a car that's used on the road, unlike a straight de-cat pipe.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e HJS Tuning ECE Downpipes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 63.55mm (2.5\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Time:\u003c\/strong\u003e approx. 3 to 3.5 hours (Milltek figure)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e63.55mm (2.5\") pipework\u003c\/li\u003e\n\u003cli\u003eHigh-flow sports catalyst flows better than the dense factory unit while still treating exhaust gases\u003c\/li\u003e\n\u003cli\u003eEC approved\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (Non-OPF\/GPF Models) (2016 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models, which needs the \u003ca href=\"\/products\/milltek-sports-cat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; Sports Cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes a fitting time of approx. 3 to 3.5 hours. Before ordering, note: ECE Approved fits to Milltek Sport \u0026amp; OE Catback Systems. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-active-valve-control-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Active Valve Control Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-sports-cat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; Sports Cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eEvery version of this part is listed by Milltek as EC approved.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eA suitable remap is strongly recommended, as the engine management needs to account for the change in flow and sensor readings. Speak to your tuner before fitting.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists it for use with the factory (OE) exhaust system.\u003c\/p\u003e\n\u003ch3\u003eHow is a sports cat different from a de-cat?\u003c\/h3\u003e\n\u003cp\u003eA sports cat still contains a catalyst, just a less dense one that flows better than the factory unit. A de-cat removes the catalyst completely.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes approx. 3 to 3.5 hours.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392686371201,"sku":"MIL-SSXAU771","price":2762.26,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU1053_1_43fbc5c6-bf6a-4fed-b752-9049cd46eb59.jpg?v=1791890650"},{"product_id":"milltek-sports-cat-downpipe-audi-rs3-sportback-400ps-8v-mqb-facelift-non-opf-gpf-17-18","title":"Milltek Sports Cat Downpipe Audi RS3 Sportback 400PS 8V MQB Facelift Non-OPF\/GPF 17-18","description":"\u003ch2\u003eMilltek Downpipe \u0026amp; Sports Cat for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards) – Improved Flow, Sports Catalyst\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's large-bore downpipe with hi-flow sports cat for the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models. It replaces the restrictive factory downpipe with a larger-bore pipe fitted with a high-flow sports catalyst in place of the standard unit, using a less dense substrate that flows significantly better than the factory cat while still treating the exhaust gases passing through it.\u003c\/p\u003e\n\u003cp\u003eIt sits between a stock downpipe and a full de-cat: a genuine flow gain suited to a Stage 1 or Stage 2 remap, without giving up the catalyst entirely the way a de-cat pipe does.\u003c\/p\u003e\n\u003cp\u003eIn the UK, a replacement catalyst on a car first registered from 1 March 2001 needs ECE R103 type-approval to be road legal, so check the EC Approved line in the specification for the version you choose.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Large Bore Downpipe and Hi-Flow Sports Cat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eHigh-flow sports catalyst flows better than the dense factory unit while still treating exhaust gases\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models (2022 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (Non-OPF\/GPF Models) (2016 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models, which needs the \u003ca href=\"\/products\/milltek-sports-cat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; Sports Cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eThis work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-active-valve-control-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Active Valve Control Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-sports-cat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; Sports Cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eMilltek lists this as a race part without EC approval, so it is intended for off-road and competition use.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eA suitable remap is strongly recommended, as the engine management needs to account for the change in flow and sensor readings. Speak to your tuner before fitting.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Some are made for the factory (OE) system and others for the Milltek cat-back, so check the notes for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eHow is a sports cat different from a de-cat?\u003c\/h3\u003e\n\u003cp\u003eA sports cat still contains a catalyst, just a less dense one that flows better than the factory unit. A de-cat removes the catalyst completely.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392686436737,"sku":"MIL-SSXAU726","price":1349.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU1053_1_127f5ef1-dc3f-48ce-af92-292ea3a0e1c7.jpg?v=1791890652"},{"product_id":"milltek-secondary-catalyst-bypass-audi-rs3-sportback-400ps-8v-mqb-facelift-non-opf-gpf-17-18","title":"Milltek Secondary Catalyst Bypass Audi RS3 Sportback 400PS 8V MQB Facelift Non-OPF\/GPF 17-18","description":"\u003ch2\u003eMilltek Secondary Catalyst Bypass for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards) – Maximum Flow, Motorsport Use\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's large-bore downpipe and de-cat for the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models. It replaces the factory downpipe with a larger-bore pipe and removes the catalytic converter entirely, clearing the single most restrictive point in the exhaust for the biggest flow gain available at this position in the system. It's usually fitted alongside a Stage 2 remap, since the ECU needs to be told to expect the different readings the lambda sensors give once the cat's gone.\u003c\/p\u003e\n\u003cp\u003eIt's built for owners already committed to a serious power upgrade rather than a casual bolt-on, so pair it with the matching Milltek cat-back system for the full effect.\u003c\/p\u003e\n\u003cp\u003eBecause it removes the cat, it's intended for off-road and competition use. A de-catted car will fail an MOT emissions test and isn't legal to use on UK roads.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Secondary Catalyst Bypass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eRemoves the factory catalyst for maximum flow (off-road and competition use only)\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models (2022 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback (8V MQB - Pre Facelift Only) (2015-2017)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (Non-OPF\/GPF Models) (2016 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models, which needs the \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, note: Fits both OE and Milltek Sport Cat Back Systems, Not required on Turbo Back System *** Not all vehicles come equipped with secondary cats, visual check recommended before ordering ***. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-active-valve-control-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Active Valve Control Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eNo. Removing the catalyst means the car will fail an MOT emissions test, so it is for off-road and competition use only.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eA suitable remap is strongly recommended, as the engine management needs to account for the change in flow and sensor readings. Speak to your tuner before fitting.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Some are made for the factory (OE) system and others for the Milltek cat-back, so check the notes for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eWill removing the cat cause a warning light?\u003c\/h3\u003e\n\u003cp\u003eWithout suitable software it is likely to, as the ECU expects the readings a working catalyst gives. This is why Milltek pairs it with a remap.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392686469505,"sku":"MIL-SSXAU588","price":227.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU588_1_8392359d-ca2c-46f4-88a6-0081465f6a45.jpg?v=1791890659"},{"product_id":"maxton-x-milltek-quad-outlet-rear-diffuser-audi-rs3-sportback-8v-facelift-opf-gpf-19","title":"Maxton x Milltek Quad Outlet Rear Diffuser Audi RS3 Sportback 8V Facelift OPF\/GPF 19+","description":"\u003ch2\u003eMilltek Maxton x Milltek Quad Outlet Rear Diffuser for Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018) – Genuine Milltek Fitment Part\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's diffuser for the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models. It's a rear diffuser, produced in collaboration with Maxton Design, styled to complement the matching Milltek exhaust tailpipes rather than change how the exhaust itself performs. It's offered in 2 tailpipe finishes, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Additional parts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Time:\u003c\/strong\u003e approx. 2 to 2.5 hours (Milltek figure)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eGenuine Milltek part designed to work with the matching Milltek system\u003c\/li\u003e\n\u003cli\u003eChoice of 2 tailpipe finishes: GT-100 Black, GT-100 Polished\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e Audi RS3 Sportback OPF\/GPF Models models, or any model not listed above.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes a fitting time of approx. 2 to 2.5 hours. Some versions: Maxton x Milltek Quad Outlet Rear Diffuser - Gloss Diffuser - Quad GT-100 Black Trims - Fits with any Milltek Sport Cat Back as upgrade kit or replaces trim option on new systems. Some versions: Maxton x Milltek Quad Outlet Rear Diffuser - Gloss Diffuser - Quad GT-100 Polished Trims - Fits with any Milltek Sport Cat Back as upgrade kit or replaces trim option on new systems. We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-sportback-400ps-8v-facelift-non-opf-gpf-17-18\"\u003eMilltek Cat-back Exhaust Audi RS3 Sportback 400PS 8V Facelift Non-OPF\/GPF 17-18\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhich tailpipe finishes are available?\u003c\/h3\u003e\n\u003cp\u003eYou can choose from: GT-100 Black, GT-100 Polished. The finish is cosmetic and does not change the sound.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eMilltek does not list EC approval for this part. Any exhaust used on the road must still meet noise and emissions rules, so check the requirements where you live.\u003c\/p\u003e\n\u003ch3\u003eWhat does it work with?\u003c\/h3\u003e\n\u003cp\u003eMilltek notes: \"Maxton x Milltek Quad Outlet Rear Diffuser - Gloss Diffuser - Quad GT-100 Black Trims - Fits with any Milltek Sport Cat Back as upgrade kit or replaces trim option on new systems\". Check this matches your current exhaust before ordering.\u003c\/p\u003e\n\u003ch3\u003eIs this a complete exhaust system?\u003c\/h3\u003e\n\u003cp\u003eNo. It is designed to be used with the system or factory parts described above, rather than as a complete exhaust on its own.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes approx. 2 to 2.5 hours.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"GT-100 Black","offer_id":56392686502273,"sku":"MIL-SSXAU1028","price":735.69,"currency_code":"GBP","in_stock":true},{"title":"GT-100 Polished","offer_id":56392686535041,"sku":"MIL-SSXAU1029","price":560.7,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU1053_1_2ebf57b4-a061-4c99-8c58-d69435d4a2b7.jpg?v=1791890662"},{"product_id":"milltek-cat-back-exhaust-audi-rs3-sportback-400ps-8v-facelift-non-opf-gpf-17-18","title":"Milltek Cat Back Exhaust Audi RS3 Sportback 400PS 8V Facelift Non-OPF\/GPF 17-18","description":"\u003ch2\u003eMilltek Cat-back Exhaust for Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018) – Sharper Sound, Reduced Back Pressure\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's cat-back system for the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models. It replaces everything from the factory catalytic converter rearward with wider-bore pipework, a re-profiled mid-pipe and silencers tuned specifically for this platform, cutting back pressure and sharpening the exhaust note. The factory catalytic converter stays in place, so the car's emissions hardware is left as standard. It's offered in non-resonated, race non-resonated or resonated EC approved versions and 8 tailpipe finishes, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's aimed at owners who want a noticeably different sound and a genuine, if modest, flow improvement without touching anything upstream of the cat: a straightforward bolt-on that doesn't need a remap or any other supporting mods to enjoy.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Cat-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003eReplaces the standard exhaust from the catalytic converter back, so the factory cat is retained\u003c\/li\u003e\n\u003cli\u003eChoice of 8 tailpipe finishes: Burnt Titanium, Cerakote Black, Polished, Titanium, Burnt Titanium Oval, Cerakote Black Oval, Polished Oval, Titanium Oval\u003c\/li\u003e\n\u003cli\u003eEC approved versions available\u003c\/li\u003e\n\u003cli\u003eResonated (quieter) or non-resonated (louder) versions\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Sportback (8V MQB - Pre Facelift Only), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-sportback-8v-mqb-pre-facelift-15-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Sportback 8V MQB Pre Facelift 15-17\u003c\/a\u003e; the Audi RS3 Sportback S tronic (8P), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-sportback-s-tronic-8p-11-12\"\u003eMilltek Cat-back Exhaust Audi RS3 Sportback S tronic 8P 11-12\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eThe fitting time varies by version; see the specification table for the option you choose. We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between the resonated and non-resonated versions?\u003c\/h3\u003e\n\u003cp\u003eThe resonated version adds extra silencing for a quieter, more refined tone. The non-resonated version leaves it out, so it is louder and more aggressive. Race versions are the loudest and are intended for track use.\u003c\/p\u003e\n\u003ch3\u003eWhich tailpipe finishes are available?\u003c\/h3\u003e\n\u003cp\u003eYou can choose from: Burnt Titanium, Cerakote Black, Polished, Titanium, Burnt Titanium Oval, Cerakote Black Oval, Polished Oval, Titanium Oval. The finish is cosmetic and does not change the sound.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Sportback (8V MQB - Pre Facelift Only)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-sportback-8v-mqb-pre-facelift-15-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Sportback 8V MQB Pre Facelift 15-17\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eSome versions are EC approved; check the EC Approved line in the specification for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory catalytic converter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory catalytic converter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory catalytic converter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Milltek's fitting time for each option is shown in its specification table.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Non-Resonated \/ Burnt Titanium","offer_id":56392686567809,"sku":"MIL-SSXAU887","price":2482.86,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Cerakote Black","offer_id":56392686600577,"sku":"MIL-SSXAU884","price":2302.54,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Polished","offer_id":56392686633345,"sku":"MIL-SSXAU885","price":2210.54,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Titanium","offer_id":56392686666113,"sku":"MIL-SSXAU886","price":2428.18,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ Burnt Titanium","offer_id":56392686698881,"sku":"MIL-SSXAU981","price":2539.17,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ Cerakote Black","offer_id":56392686731649,"sku":"MIL-SSXAU978","price":2358.85,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ Polished","offer_id":56392686764417,"sku":"MIL-SSXAU979","price":2266.86,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ Titanium","offer_id":56392686797185,"sku":"MIL-SSXAU980","price":2484.5,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Burnt Titanium","offer_id":56392686829953,"sku":"MIL-SSXAU883","price":2739.84,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Cerakote Black","offer_id":56392686862721,"sku":"MIL-SSXAU880","price":2559.53,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Polished","offer_id":56392686895489,"sku":"MIL-SSXAU881","price":2467.53,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Titanium","offer_id":56392686928257,"sku":"MIL-SSXAU882","price":2685.17,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Burnt Titanium Oval","offer_id":56392686961025,"sku":"MIL-SSXAU796","price":1967.11,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Cerakote Black Oval","offer_id":56392686993793,"sku":"MIL-SSXAU769","price":1786.8,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Polished Oval","offer_id":56392687026561,"sku":"MIL-SSXAU770","price":1694.8,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Titanium Oval","offer_id":56392687059329,"sku":"MIL-SSXAU795","price":1912.45,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Burnt Titanium Oval","offer_id":56392687092097,"sku":"MIL-SSXAU798","price":2203.58,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Cerakote Black Oval","offer_id":56392687124865,"sku":"MIL-SSXAU768","price":2023.26,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Polished Oval","offer_id":56392687157633,"sku":"MIL-SSXAU767","price":1931.27,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Titanium Oval","offer_id":56392687190401,"sku":"MIL-SSXAU797","price":2148.91,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU887_1.jpg?v=1791890695"},{"product_id":"milltek-active-valve-control-audi-rs3-sportback-400ps-8v-facelift-opf-gpf-19","title":"Milltek Active Valve Control Audi RS3 Sportback 400PS 8V Facelift OPF\/GPF 19+","description":"\u003ch2\u003eMilltek Active Valve Control for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards) – Switchable Exhaust Volume\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's active valve control system for the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models. It adds an electronically-operated valve to an existing Milltek system, opening a second, less restrictive path through the silencer that stays closed for a refined, near-standard tone around town and opens under load or at the press of a button for a louder, more open sound.\u003c\/p\u003e\n\u003cp\u003eIt's the option to go for if you want the flexibility to keep the car quiet for early starts and long motorway runs, then switch to the full exhaust note whenever you actually want to hear it, without swapping any hardware.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Active Valve Control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models (2017 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback (8V MQB - Pre Facelift Only) (2015-2017)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (Non-OPF\/GPF Models) (2016 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (OPF\/GPF Models) (2019 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e Audi RS3 Saloon OPF\/GPF Models models, or any model not listed above.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eThis involves connecting to the car's wiring and exhaust valves, so we recommend fitting by a specialist familiar with the car's electrics.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eHow is it controlled?\u003c\/h3\u003e\n\u003cp\u003eDepending on the version, it is controlled using a phone app.\u003c\/p\u003e\n\u003ch3\u003eWill the car be louder all the time?\u003c\/h3\u003e\n\u003cp\u003eNo. With the valve closed the tone stays close to standard; open it when you want the full exhaust note.\u003c\/p\u003e\n\u003ch3\u003eWhat does it work with?\u003c\/h3\u003e\n\u003cp\u003eMilltek notes: \"with Apple \u0026amp; Android Bluetooth App support - Fits both OE and Milltek Sport Cat Back Systems\". Check this matches your current exhaust before ordering.\u003c\/p\u003e\n\u003ch3\u003eIs this a complete exhaust system?\u003c\/h3\u003e\n\u003cp\u003eNo. It is designed to be used with the system or factory parts described above, rather than as a complete exhaust on its own.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392687255937,"sku":"MIL-SSXAU746","price":660.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU746_1_62922670-e10f-4869-bb17-1960fcb90956.jpg?v=1791890666"},{"product_id":"milltek-decat-downpipe-audi-rs3-sportback-8v-facelift-opf-gpf-19","title":"Milltek Decat Downpipe Audi RS3 Sportback 8V Facelift OPF\/GPF 19+","description":"\u003ch2\u003eMilltek Downpipe \u0026amp; De-cat for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models (2019 onwards) – Maximum Flow, Motorsport Use\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's large-bore downpipe and de-cat for the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models. It replaces the factory downpipe with a larger-bore pipe and removes the catalytic converter entirely, clearing the single most restrictive point in the exhaust for the biggest flow gain available at this position in the system. It's usually fitted alongside a Stage 2 remap, since the ECU needs to be told to expect the different readings the lambda sensors give once the cat's gone. It's offered in a choice of cat (De-cat, De-cat with GPF Delete), so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's built for owners already committed to a serious power upgrade rather than a casual bolt-on, so pair it with the matching Milltek cat-back system for the full effect.\u003c\/p\u003e\n\u003cp\u003eBecause it removes the cat, it's intended for off-road and competition use. A de-catted car will fail an MOT emissions test and isn't legal to use on UK roads.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Large-bore Downpipe and De-cat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eRemoves the factory catalyst for maximum flow (off-road and competition use only)\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RSQ3 2.5T Sportback \u0026amp; SUV (OPF\/GPF Equipped Models Only) (2020 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (OPF\/GPF Models) (2019 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot every version fits every car in this list. Check the fitment shown for the option you select.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models, which needs the \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eSome versions: Fits both OE and Milltek Sport Cat Back Systems - Requires Stage 2 ECU Software - NOTE to Customers - Due to Design of Turbo Waste Gate fitting a decat can cause metallic rattle to be heard more than the OE Cat Downpipe. Some versions: V2 Downpipe with Decat \u0026amp; OPF\/GPF Bypass - Fits both OE and Milltek Sport Cat Back Systems - NOTE to Customers - Due to Design of Turbo Waste Gate fitting a decat can cause metallic rattle to be heard more than the OE Cat Downpipe - Requires stage 2 ECU software. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-filter-back-exhaust-audi-rs3-sportback-8y-opf-gpf-21\"\u003eMilltek Filter-back Exhaust Audi RS3 Sportback 8Y OPF\/GPF 21+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eNo. Removing the catalyst means the car will fail an MOT emissions test, so it is for off-road and competition use only.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek notes: \"Fits both OE and Milltek Sport Cat Back Systems - Requires Stage 2 ECU Software - NOTE to Customers - Due to Design of Turbo Waste Gate fitting a decat can cause metallic rattle to be heard more than the OE Cat Downpipe\". Without suitable software the engine management is likely to log faults.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Some are made for the factory (OE) system and others for the Milltek cat-back, so check the notes for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eWill removing the cat cause a warning light?\u003c\/h3\u003e\n\u003cp\u003eWithout suitable software it is likely to, as the ECU expects the readings a working catalyst gives. This is why Milltek pairs it with a remap.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"De-cat","offer_id":56392687288705,"sku":"MIL-SSXAU817","price":836.95,"currency_code":"GBP","in_stock":true},{"title":"De-cat with GPF Delete","offer_id":56392687321473,"sku":"MIL-SSXAU897","price":1175.63,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU817_1_7b063b63-eaf5-4d5f-87d4-661b0e7d4690.jpg?v=1791890671"},{"product_id":"milltek-sports-cat-downpipe-audi-rs3-sportback-8v-facelift-opf-gpf-19","title":"Milltek Sports Cat Downpipe Audi RS3 Sportback 8V Facelift OPF\/GPF 19+","description":"\u003ch2\u003eMilltek Downpipe \u0026amp; Sports Cat for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models (2019 onwards) – Improved Flow, Sports Catalyst\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's large-bore downpipe with hi-flow sports cat for the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models. It replaces the restrictive factory downpipe with a larger-bore pipe fitted with a high-flow sports catalyst in place of the standard unit, using a less dense substrate that flows significantly better than the factory cat while still treating the exhaust gases passing through it.\u003c\/p\u003e\n\u003cp\u003eIt sits between a stock downpipe and a full de-cat: a genuine flow gain suited to a Stage 1 or Stage 2 remap, without giving up the catalyst entirely the way a de-cat pipe does.\u003c\/p\u003e\n\u003cp\u003eIn the UK, a replacement catalyst on a car first registered from 1 March 2001 needs ECE R103 type-approval to be road legal, so check the EC Approved line in the specification for the version you choose.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Large Bore Downpipe and Hi-Flow Sports Cat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eHigh-flow sports catalyst flows better than the dense factory unit while still treating exhaust gases\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RSQ3 2.5T Sportback \u0026amp; SUV (OPF\/GPF Equipped Models Only) (2020 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (OPF\/GPF Models) (2019 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models, which needs the \u003ca href=\"\/products\/milltek-hjs-tuning-ece-downpipes-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek HJS Tuning ECE Downpipes Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, note: Fits both OE and Milltek Sport Cat Back Systems - Requires Stage 2 ECU Software. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-filter-back-exhaust-audi-rs3-sportback-8y-opf-gpf-21\"\u003eMilltek Filter-back Exhaust Audi RS3 Sportback 8Y OPF\/GPF 21+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-hjs-tuning-ece-downpipes-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek HJS Tuning ECE Downpipes Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eMilltek lists this as a race part without EC approval, so it is intended for off-road and competition use.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek notes: \"Fits both OE and Milltek Sport Cat Back Systems - Requires Stage 2 ECU Software\". Without suitable software the engine management is likely to log faults.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Some are made for the factory (OE) system and others for the Milltek cat-back, so check the notes for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eHow is a sports cat different from a de-cat?\u003c\/h3\u003e\n\u003cp\u003eA sports cat still contains a catalyst, just a less dense one that flows better than the factory unit. A de-cat removes the catalyst completely.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392687354241,"sku":"MIL-SSXAU818","price":1522.71,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU818_1_f0569b0a-4448-40c9-94f0-deb2960a9cf7.jpg?v=1791890672"},{"product_id":"milltek-cat-back-exhaust-audi-rs3-sportback-8v-facelift-opf-gpf-19","title":"Milltek Cat Back Exhaust Audi RS3 Sportback 8V Facelift OPF\/GPF 19+","description":"\u003ch2\u003eMilltek Cat-back Exhaust for Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018) – Sharper Sound, Reduced Back Pressure\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's cat-back system for the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models. It replaces everything from the factory catalytic converter rearward with wider-bore pipework, a re-profiled mid-pipe and silencers tuned specifically for this platform, cutting back pressure and sharpening the exhaust note. The factory catalytic converter stays in place, so the car's emissions hardware is left as standard. It's offered in non-resonated, race non-resonated or resonated EC approved versions and 8 tailpipe finishes, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's aimed at owners who want a noticeably different sound and a genuine, if modest, flow improvement without touching anything upstream of the cat: a straightforward bolt-on that doesn't need a remap or any other supporting mods to enjoy.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Cat-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003eReplaces the standard exhaust from the catalytic converter back, so the factory cat is retained\u003c\/li\u003e\n\u003cli\u003eChoice of 8 tailpipe finishes: Burnt Titanium, Cerakote Black, Polished, Titanium, Burnt Titanium Oval, Cerakote Black Oval, Polished Oval, Titanium Oval\u003c\/li\u003e\n\u003cli\u003eEC approved versions available\u003c\/li\u003e\n\u003cli\u003eResonated (quieter) or non-resonated (louder) versions\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models (2017-2018)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Sportback (8V MQB - Pre Facelift Only), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-sportback-8v-mqb-pre-facelift-15-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Sportback 8V MQB Pre Facelift 15-17\u003c\/a\u003e; the Audi RS3 Sportback S tronic (8P), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-sportback-s-tronic-8p-11-12\"\u003eMilltek Cat-back Exhaust Audi RS3 Sportback S tronic 8P 11-12\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eThe fitting time varies by version; see the specification table for the option you choose. We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between the resonated and non-resonated versions?\u003c\/h3\u003e\n\u003cp\u003eThe resonated version adds extra silencing for a quieter, more refined tone. The non-resonated version leaves it out, so it is louder and more aggressive. Race versions are the loudest and are intended for track use.\u003c\/p\u003e\n\u003ch3\u003eWhich tailpipe finishes are available?\u003c\/h3\u003e\n\u003cp\u003eYou can choose from: Burnt Titanium, Cerakote Black, Polished, Titanium, Burnt Titanium Oval, Cerakote Black Oval, Polished Oval, Titanium Oval. The finish is cosmetic and does not change the sound.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Sportback (8V MQB - Pre Facelift Only)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-sportback-8v-mqb-pre-facelift-15-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Sportback 8V MQB Pre Facelift 15-17\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eSome versions are EC approved; check the EC Approved line in the specification for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory catalytic converter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory catalytic converter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory catalytic converter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Milltek's fitting time for each option is shown in its specification table.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Non-Resonated \/ Burnt Titanium","offer_id":56392688763265,"sku":"MIL-SSXAU887","price":2482.86,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Cerakote Black","offer_id":56392688796033,"sku":"MIL-SSXAU884","price":2302.54,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Polished","offer_id":56392688828801,"sku":"MIL-SSXAU885","price":2210.54,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Titanium","offer_id":56392688861569,"sku":"MIL-SSXAU886","price":2428.18,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ Burnt Titanium","offer_id":56392688894337,"sku":"MIL-SSXAU981","price":2539.17,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ Cerakote Black","offer_id":56392688927105,"sku":"MIL-SSXAU978","price":2358.85,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ Polished","offer_id":56392688959873,"sku":"MIL-SSXAU979","price":2266.86,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ Titanium","offer_id":56392688992641,"sku":"MIL-SSXAU980","price":2484.5,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Burnt Titanium","offer_id":56392689025409,"sku":"MIL-SSXAU883","price":2739.84,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Cerakote Black","offer_id":56392689058177,"sku":"MIL-SSXAU880","price":2559.53,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Polished","offer_id":56392689090945,"sku":"MIL-SSXAU881","price":2467.53,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Titanium","offer_id":56392689123713,"sku":"MIL-SSXAU882","price":2685.17,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Burnt Titanium Oval","offer_id":56392689156481,"sku":"MIL-SSXAU796","price":1967.11,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Cerakote Black Oval","offer_id":56392689189249,"sku":"MIL-SSXAU769","price":1786.8,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Polished Oval","offer_id":56392689222017,"sku":"MIL-SSXAU770","price":1694.8,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Titanium Oval","offer_id":56392689254785,"sku":"MIL-SSXAU795","price":1912.45,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Burnt Titanium Oval","offer_id":56392689287553,"sku":"MIL-SSXAU798","price":2203.58,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Cerakote Black Oval","offer_id":56392689320321,"sku":"MIL-SSXAU768","price":2023.26,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Polished Oval","offer_id":56392689353089,"sku":"MIL-SSXAU767","price":1931.27,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Titanium Oval","offer_id":56392689385857,"sku":"MIL-SSXAU797","price":2148.91,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU887_1_e5ea2313-c38f-4dcf-bc18-ac78115b4f47.jpg?v=1791890709"},{"product_id":"milltek-active-valve-control-audi-rs3-sportback-8y-evo-opf-gpf-21","title":"Milltek Active Valve Control Audi RS3 Sportback 8Y EVO OPF\/GPF 21+","description":"\u003ch2\u003eMilltek Active Valve Control for Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models (2022 onwards) – Switchable Exhaust Volume\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's active valve control system for the Audi RS3 Sportback 400PS (8Y MQB EVO) - OPF\/GPF Models. It adds an electronically-operated valve to an existing Milltek system, opening a second, less restrictive path through the silencer that stays closed for a refined, near-standard tone around town and opens under load or at the press of a button for a louder, more open sound. It's offered in left hand drive or right hand drive versions, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's the option to go for if you want the flexibility to keep the car quiet for early starts and long motorway runs, then switch to the full exhaust note whenever you actually want to hear it, without swapping any hardware.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Active Valve Control\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - Non-OPF\/GPF Models (2022 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e Audi RS3 Saloon\/Sedan OPF\/GPF Models models, or any model not listed above.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eThe fitting time varies by version; see the specification table for the option you choose. Some versions: Plug \u0026amp; Play Remote Control System for OE \u0026amp; Milltek Sport Exhausts - For Left Hand Drive Vehicles Only. Some versions: Plug \u0026amp; Play Remote Control System for OE \u0026amp; Milltek Sport Exhausts - For Right Hand Drive Vehicles Only. This involves connecting to the car's wiring and exhaust valves, so we recommend fitting by a specialist familiar with the car's electrics.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-filter-back-exhaust-audi-rs3-saloon-400ps-8y-mqb-evo-non-opf-gpf-22\"\u003eMilltek Filter-back Exhaust Audi RS3 Saloon 400PS 8Y MQB EVO Non-OPF\/GPF 22+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eHow is it controlled?\u003c\/h3\u003e\n\u003cp\u003eDepending on the version, it is controlled using a remote control.\u003c\/p\u003e\n\u003ch3\u003eWill the car be louder all the time?\u003c\/h3\u003e\n\u003cp\u003eNo. With the valve closed the tone stays close to standard; open it when you want the full exhaust note.\u003c\/p\u003e\n\u003ch3\u003eWhat does it work with?\u003c\/h3\u003e\n\u003cp\u003eMilltek notes: \"Plug \u0026amp; Play Remote Control System for OE \u0026amp; Milltek Sport Exhausts - For Left Hand Drive Vehicles Only\". Check this matches your current exhaust before ordering.\u003c\/p\u003e\n\u003ch3\u003eIs this a complete exhaust system?\u003c\/h3\u003e\n\u003cp\u003eNo. It is designed to be used with the system or factory parts described above, rather than as a complete exhaust on its own.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Milltek's fitting time for each option is shown in its specification table.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Left Hand Drive","offer_id":56392689418625,"sku":"MIL-SSXAU972","price":314.23,"currency_code":"GBP","in_stock":true},{"title":"Right Hand Drive","offer_id":56392689451393,"sku":"MIL-SSXAU973","price":314.23,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU972_1_bcb06470-9b1f-43e5-a2da-ac1f4e129ebb.jpg?v=1791890683"},{"product_id":"milltek-decat-downpipe-audi-rs3-sportback-8y-opf-gpf-21","title":"Milltek Decat Downpipe Audi RS3 Sportback 8Y OPF\/GPF 21+","description":"\u003ch2\u003eMilltek Downpipe \u0026amp; De-cat for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models (2019 onwards) – Maximum Flow, Motorsport Use\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's large-bore downpipe and de-cat for the Audi RS3 Sportback 400PS (8Y MQB EVO) - OPF\/GPF Models. It replaces the factory downpipe with a larger-bore pipe and removes the catalytic converter entirely, clearing the single most restrictive point in the exhaust for the biggest flow gain available at this position in the system. It's usually fitted alongside a Stage 2 remap, since the ECU needs to be told to expect the different readings the lambda sensors give once the cat's gone. It's offered in a choice of cat (De-cat, De-cat with GPF Delete) and versions to suit the factory or a Milltek system, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's built for owners already committed to a serious power upgrade rather than a casual bolt-on, so pair it with the matching Milltek cat-back system for the full effect.\u003c\/p\u003e\n\u003cp\u003eBecause it removes the cat, it's intended for off-road and competition use. A de-catted car will fail an MOT emissions test and isn't legal to use on UK roads.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Large-bore Downpipe and De-cat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eRemoves the factory catalyst for maximum flow (off-road and competition use only)\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RSQ3 2.5T Sportback \u0026amp; SUV (OPF\/GPF Equipped Models Only) (2020 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (OPF\/GPF Models) (2019 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot every version fits every car in this list. Check the fitment shown for the option you select.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models, which needs the \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eSome versions: Fits both OE and Milltek Sport Cat Back Systems - Requires Stage 2 ECU Software - NOTE to Customers - Due to Design of Turbo Waste Gate fitting a decat can cause metallic rattle to be heard more than the OE Cat Downpipe. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-filter-back-exhaust-audi-rs3-sportback-8y-opf-gpf-21\"\u003eMilltek Filter-back Exhaust Audi RS3 Sportback 8Y OPF\/GPF 21+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-decat-downpipe-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS3 Saloon 400PS 8V MQB - Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eNo. Removing the catalyst means the car will fail an MOT emissions test, so it is for off-road and competition use only.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek notes: \"Fits both OE and Milltek Sport Cat Back Systems - Requires Stage 2 ECU Software - NOTE to Customers - Due to Design of Turbo Waste Gate fitting a decat can cause metallic rattle to be heard more than the OE Cat Downpipe\". Without suitable software the engine management is likely to log faults.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Some are made for the factory (OE) system and others for the Milltek cat-back, so check the notes for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eWill removing the cat cause a warning light?\u003c\/h3\u003e\n\u003cp\u003eWithout suitable software it is likely to, as the ECU expects the readings a working catalyst gives. This is why Milltek pairs it with a remap.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"De-cat \/ Fits OE and Milltek Cat Back","offer_id":56392689516929,"sku":"MIL-SSXAU817","price":836.95,"currency_code":"GBP","in_stock":true},{"title":"De-cat with GPF Delete \/ Fits OE and Milltek Cat Back","offer_id":56392689549697,"sku":"MIL-SSXAU897","price":1175.63,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU817_1_ed87189d-2f29-43da-a53d-7d4632f4a498.jpg?v=1791890683"},{"product_id":"milltek-sports-cat-downpipe-audi-rs3-sportback-8y-opf-gpf-21","title":"Milltek Sports Cat Downpipe Audi RS3 Sportback 8Y OPF\/GPF 21+","description":"\u003ch2\u003eMilltek Downpipe \u0026amp; Sports Cat for Audi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models (2019 onwards) – Improved Flow, Sports Catalyst\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's large-bore downpipe with hi-flow sports cat for the Audi RS3 Sportback 400PS (8Y MQB EVO) - OPF\/GPF Models. It replaces the restrictive factory downpipe with a larger-bore pipe fitted with a high-flow sports catalyst in place of the standard unit, using a less dense substrate that flows significantly better than the factory cat while still treating the exhaust gases passing through it.\u003c\/p\u003e\n\u003cp\u003eIt sits between a stock downpipe and a full de-cat: a genuine flow gain suited to a Stage 1 or Stage 2 remap, without giving up the catalyst entirely the way a de-cat pipe does.\u003c\/p\u003e\n\u003cp\u003eIn the UK, a replacement catalyst on a car first registered from 1 March 2001 needs ECE R103 type-approval to be road legal, so check the EC Approved line in the specification for the version you choose.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Large Bore Downpipe and Hi-Flow Sports Cat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eHigh-flow sports catalyst flows better than the dense factory unit while still treating exhaust gases\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8V MQB) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF\/GPF Models (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS3 Sportback 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RSQ3 2.5T Sportback \u0026amp; SUV (OPF\/GPF Equipped Models Only) (2020 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk3 TTRS 2.5TFSI Quattro (OPF\/GPF Models) (2019 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models, which needs the \u003ca href=\"\/products\/milltek-hjs-tuning-ece-downpipes-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek HJS Tuning ECE Downpipes Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, note: Fits both OE and Milltek Sport Cat Back Systems - Requires Stage 2 ECU Software. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-filter-back-exhaust-audi-rs3-sportback-8y-opf-gpf-21\"\u003eMilltek Filter-back Exhaust Audi RS3 Sportback 8Y OPF\/GPF 21+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS3 Saloon\/Sedan 400PS (8Y MQB EVO) - OPF\/GPF Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Saloon\/Sedan 400PS (8V MQB) - Non-OPF\/GPF Models?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-hjs-tuning-ece-downpipes-audi-rs3-saloon-400ps-8v-mqb-non-opf-gpf-17\"\u003eMilltek HJS Tuning ECE Downpipes Audi RS3 Saloon 400PS 8V MQB Non-OPF\/GPF 17+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eMilltek lists this as a race part without EC approval, so it is intended for off-road and competition use.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek notes: \"Fits both OE and Milltek Sport Cat Back Systems - Requires Stage 2 ECU Software\". Without suitable software the engine management is likely to log faults.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Some are made for the factory (OE) system and others for the Milltek cat-back, so check the notes for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eHow is a sports cat different from a de-cat?\u003c\/h3\u003e\n\u003cp\u003eA sports cat still contains a catalyst, just a less dense one that flows better than the factory unit. A de-cat removes the catalyst completely.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392689680769,"sku":"MIL-SSXAU818","price":1522.71,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU818_1_e88346b3-4980-4e61-ab30-09edef14948c.jpg?v=1791890692"},{"product_id":"milltek-filter-back-exhaust-audi-rs3-sportback-8y-opf-gpf-21","title":"Milltek Filter Back Exhaust Audi RS3 Sportback 8Y OPF\/GPF 21+","description":"\u003ch2\u003eMilltek Filter-back Exhaust for Audi RS3 Sportback 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards) – Sharper Sound, Filter Retained\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's particulate filter-back system for the Audi RS3 Sportback 400PS (8Y MQB EVO) - OPF\/GPF Models. It replaces everything downstream of the factory diesel or petrol particulate filter with wider-bore pipework and re-tuned silencers, cutting back pressure and sharpening the exhaust note. The filter itself is left exactly where the manufacturer fitted it, so emissions equipment is unaffected. It's offered in non-resonated, race non-resonated or resonated EC approved versions, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's the right choice if you want a sportier sound and a genuine, if modest, flow improvement on a filter-equipped car, without going anywhere near the parts of the system that keep it emissions-compliant.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Particulate Filter-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 80mm (3.15\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Time:\u003c\/strong\u003e approx. 1 to 1.5 hours (Milltek figure)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e80mm (3.15\") pipework\u003c\/li\u003e\n\u003cli\u003eFits behind the factory particulate filter, which stays in place\u003c\/li\u003e\n\u003cli\u003eEC approved versions available\u003c\/li\u003e\n\u003cli\u003eResonated (quieter) or non-resonated (louder) versions\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eAudi RS3 Sportback 400PS (8Y MQB EVO) - OPF\/GPF Models (2021 onwards)\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e any model, engine or body style not listed above. Check your car before ordering.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes a fitting time of approx. 1 to 1.5 hours. We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between the resonated and non-resonated versions?\u003c\/h3\u003e\n\u003cp\u003eThe resonated version adds extra silencing for a quieter, more refined tone. The non-resonated version leaves it out, so it is louder and more aggressive. Race versions are the loudest and are intended for track use.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eSome versions are EC approved; check the EC Approved line in the specification for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory particulate filter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory particulate filter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory particulate filter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes approx. 1 to 1.5 hours.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Non-Resonated","offer_id":56392689746305,"sku":"MIL-SSXAU965","price":2246.78,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated","offer_id":56392689779073,"sku":"MIL-SSXAU975","price":2303.09,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved","offer_id":56392689811841,"sku":"MIL-SSXAU964","price":2503.76,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU965_1.jpg?v=1791890698"},{"product_id":"milltek-secondary-catalyst-bypass-audi-rs3-sportback-s-tronic-8p-11-12","title":"Milltek Secondary Catalyst Bypass Audi RS3 Sportback S tronic 8P 11-12","description":"\u003ch2\u003eMilltek Secondary Catalyst Bypass for Audi RS3 Sportback S tronic (8P) (2011-2012) – Maximum Flow, Motorsport Use\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's large-bore downpipe and de-cat for the Audi RS3 Sportback S tronic (8P). It replaces the factory downpipe with a larger-bore pipe and removes the catalytic converter entirely, clearing the single most restrictive point in the exhaust for the biggest flow gain available at this position in the system. It's usually fitted alongside a Stage 2 remap, since the ECU needs to be told to expect the different readings the lambda sensors give once the cat's gone.\u003c\/p\u003e\n\u003cp\u003eIt's built for owners already committed to a serious power upgrade rather than a casual bolt-on, so pair it with the matching Milltek cat-back system for the full effect.\u003c\/p\u003e\n\u003cp\u003eBecause it removes the cat, it's intended for off-road and competition use. A de-catted car will fail an MOT emissions test and isn't legal to use on UK roads.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Secondary Catalyst Bypass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 63.5mm (2.5\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Time:\u003c\/strong\u003e approx. 1 to 1.5 hours (Milltek figure)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e63.5mm (2.5\") pipework\u003c\/li\u003e\n\u003cli\u003eRemoves the factory catalyst for maximum flow (off-road and competition use only)\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS3 Sportback S tronic (8P) (2011-2012)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk2 TT RS Coupé 2.5-litre TFSI quattro (2009-2014)\u003c\/li\u003e\n\u003cli\u003eAudi TT Mk2 TT RS Roadster 2.5-litre TFSI quattro (2009-2014)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Sportback (8V MQB - Pre Facelift Only), which needs the \u003ca href=\"\/products\/milltek-primary-catalyst-bypass-pipe-turbo-elbow-audi-rs3-sportback-8v-mqb-pre-facelift-15-17\"\u003eMilltek Primary Catalyst Bypass Pipe \u0026amp; Turbo Elbow Audi RS3 Sportback 8V MQB Pre Facelift 15-17\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes a fitting time of approx. 1 to 1.5 hours. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-sportback-s-tronic-8p-11-12\"\u003eMilltek Cat-back Exhaust Audi RS3 Sportback S tronic 8P 11-12\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi TT Mk2 TT RS Coupé 2.5-litre TFSI quattro?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi TT Mk2 TT RS Coupé 2.5-litre TFSI quattro as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Sportback (8V MQB - Pre Facelift Only)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-primary-catalyst-bypass-pipe-turbo-elbow-audi-rs3-sportback-8v-mqb-pre-facelift-15-17\"\u003eMilltek Primary Catalyst Bypass Pipe \u0026amp; Turbo Elbow Audi RS3 Sportback 8V MQB Pre Facelift 15-17\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eNo. Removing the catalyst means the car will fail an MOT emissions test, so it is for off-road and competition use only.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eA suitable remap is strongly recommended, as the engine management needs to account for the change in flow and sensor readings. Speak to your tuner before fitting.\u003c\/p\u003e\n\u003ch3\u003eWill removing the cat cause a warning light?\u003c\/h3\u003e\n\u003cp\u003eWithout suitable software it is likely to, as the ECU expects the readings a working catalyst gives. This is why Milltek pairs it with a remap.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes approx. 1 to 1.5 hours.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392690073985,"sku":"MIL-SSXAU226","price":252.7,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU226_1.jpg?v=1791890702"},{"product_id":"milltek-cat-back-exhaust-audi-rs3-sportback-s-tronic-8p-11-12","title":"Milltek Cat Back Exhaust Audi RS3 Sportback S tronic 8P 11-12","description":"\u003ch2\u003eMilltek Cat-back Exhaust for Audi RS3 Sportback S tronic (8P) (2011-2012) – Sharper Sound, Reduced Back Pressure\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's cat-back system for the Audi RS3 Sportback S tronic (8P). It replaces everything from the factory catalytic converter rearward with wider-bore pipework, a re-profiled mid-pipe and silencers tuned specifically for this platform, cutting back pressure and sharpening the exhaust note. The factory catalytic converter stays in place, so the car's emissions hardware is left as standard. It's offered in resonated or non-resonated versions and 3 tailpipe finishes, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's aimed at owners who want a noticeably different sound and a genuine, if modest, flow improvement without touching anything upstream of the cat: a straightforward bolt-on that doesn't need a remap or any other supporting mods to enjoy.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Cat-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip Style:\u003c\/strong\u003e Twin 90mm GT90\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Time:\u003c\/strong\u003e approx. 1 to 1.5 hours (Milltek figure)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eReplaces the standard exhaust from the catalytic converter back, so the factory cat is retained\u003c\/li\u003e\n\u003cli\u003eChoice of 3 tailpipe finishes: GT-90 Cerakote Black, GT-90 Polished, GT-90 Titanium\u003c\/li\u003e\n\u003cli\u003eEC approved versions available\u003c\/li\u003e\n\u003cli\u003eResonated (quieter) or non-resonated (louder) versions\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eAudi RS3 Sportback S tronic (8P) (2011-2012)\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS3 Sportback (8V MQB - Pre Facelift Only), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-sportback-8v-mqb-pre-facelift-15-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Sportback 8V MQB Pre Facelift 15-17\u003c\/a\u003e; the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF\/GPF Models, which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-sportback-400ps-8v-facelift-non-opf-gpf-17-18\"\u003eMilltek Cat-back Exhaust Audi RS3 Sportback 400PS 8V Facelift Non-OPF\/GPF 17-18\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes a fitting time of approx. 1 to 1.5 hours. We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-secondary-catalyst-bypass-audi-rs3-sportback-s-tronic-8p-11-12\"\u003eMilltek Secondary Catalyst Bypass Audi RS3 Sportback S tronic 8P 11-12\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between the resonated and non-resonated versions?\u003c\/h3\u003e\n\u003cp\u003eThe resonated version adds extra silencing for a quieter, more refined tone. The non-resonated version leaves it out, so it is louder and more aggressive.\u003c\/p\u003e\n\u003ch3\u003eWhich tailpipe finishes are available?\u003c\/h3\u003e\n\u003cp\u003eYou can choose from: GT-90 Cerakote Black, GT-90 Polished, GT-90 Titanium. The finish is cosmetic and does not change the sound.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS3 Sportback (8V MQB - Pre Facelift Only)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs3-sportback-8v-mqb-pre-facelift-15-17\"\u003eMilltek Cat-back Exhaust Audi RS3 Sportback 8V MQB Pre Facelift 15-17\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eSome versions are EC approved; check the EC Approved line in the specification for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory catalytic converter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory catalytic converter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory catalytic converter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes approx. 1 to 1.5 hours.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Resonated \/ GT-90 Cerakote Black","offer_id":56392690106753,"sku":"MIL-SSXAU278","price":1444.55,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ GT-90 Cerakote Black","offer_id":56392690139521,"sku":"MIL-SSXAU321","price":1295.34,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ GT-90 Polished","offer_id":56392690172289,"sku":"MIL-SSXAU322","price":1210.19,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ GT-90 Titanium","offer_id":56392690205057,"sku":"MIL-SSXAU572","price":1432.89,"currency_code":"GBP","in_stock":true},{"title":"Resonated \/ GT-90 Polished","offer_id":56392690237825,"sku":"MIL-SSXAU277","price":1359.39,"currency_code":"GBP","in_stock":true},{"title":"Resonated \/ GT-90 Titanium","offer_id":56392690270593,"sku":"MIL-SSXAU571","price":1582.09,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU278_1.jpg?v=1791890715"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/collections\/audi-rs3.jpg?v=1791897459","url":"https:\/\/milltekexhaustshop.com\/collections\/audi-rs3-performance-exhaust-systems.oembed","provider":"Milltek Exhaust Shop","version":"1.0","type":"link"}