{"product_id":"milltek-sports-cat-downpipe-audi-s3-2-0tfsi-quattro-saloon-8y-opf-gpf-20","title":"Milltek Sports Cat Downpipe Audi S3 2.0TFSI Quattro Saloon 8Y OPF\/GPF 20+","description":"\u003ch2\u003eMilltek Downpipe \u0026amp; Sports Cat for Audi S3 2.0TFSI Quattro Saloon\/Sedan 310PS \u0026amp; 333PS 8Y (OPF\/GPF Models Only) (2020 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 S3 2.0TFSI Quattro Saloon\/Sedan 310PS \u0026amp; 333PS 8Y (OPF\/GPF Models 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. It's offered in a choice of cat (HJS 200 Cell Sports Cat, 200 Cell Race Cat) 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 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 94mm (3.7\")\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\u003e94mm (3.7\") 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 S3 2.0TFSI Quattro Saloon\/Sedan 310PS \u0026amp; 333PS 8Y (OPF\/GPF Models Only) (2020 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi S3 2.0TFSI Quattro Sportback 310PS \u0026amp; 333PS 8Y (OPF\/GPF Models Only) (2020 onwards)\u003c\/li\u003e\n\u003cli\u003eVolkswagen Golf Mk8 R 2.0 TSI 320PS (GPF Equipped Models Only) (2021-2024)\u003c\/li\u003e\n\u003cli\u003eVolkswagen Golf Mk8.5 R (333ps OPF\/GPF Equipped Models Only) (2024 onwards)\u003c\/li\u003e\n\u003cli\u003eSeat Cupra Formentor 2.0TFSI 4Drive 310PS \u0026amp; 333PS (MQB EVO EA888.4 OPF\/GPF Vehicles) (2021 onwards)\u003c\/li\u003e\n\u003cli\u003eVolkswagen Tiguan R 320ps EA888.4 MQB EVO (OPF\/GPF Models Only) (2021 onwards)\u003c\/li\u003e\n\u003cli\u003eVolkswagen T-Roc R 2.0TSI 300ps (MQB EVO Models with OPF\/GPF) (2022 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 S3 2.0TFSI Quattro Saloon\/Sedan 310PS 8Y (North American\/Non-OPF Models Only), which needs the \u003ca href=\"\/products\/milltek-sports-cat-downpipe-audi-s3-2-0tfsi-quattro-saloon-8y-na-non-opf-22\"\u003eMilltek Downpipe \u0026amp; Sports Cat Audi S3 2.0TFSI Quattro Saloon 8Y North American Non-OPF 22+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eSome versions: 94mm\/3.7inch ID Turbo Outlet to 80mm\/3.15inch Downpipe with 200CPSI HJS Cat - Fits with Milltek OPF\/GPF Back System Only. Some versions: 94mm\/3.7inch ID Turbo Outlet to 80mm\/3.15inch Downpipe with 200CPSI HJS Cat - Fits with OE OPF\/GPF Back System Only. Some versions: 94mm\/3.7inch ID Turbo Outlet to 80mm\/3.15inch Downpipe with 200CPSI Race Cat - Fits with Milltek OPF\/GPF Back System Only. Some versions: 94mm\/3.7inch ID Turbo Outlet to 80mm\/3.15inch Downpipe with 200CPSI Race Cat - Fits with OE OPF\/GPF Back System Only. 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-s3-2-0tfsi-quattro-saloon-8y-opf-gpf-20\"\u003eMilltek Filter-back Exhaust Audi S3 2.0TFSI Quattro Saloon 8Y OPF\/GPF 20+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi S3 2.0TFSI Quattro Sportback 310PS \u0026amp; 333PS 8Y (OPF\/GPF Models Only)?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi S3 2.0TFSI Quattro Sportback 310PS \u0026amp; 333PS 8Y (OPF\/GPF Models Only) as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi S3 2.0TFSI Quattro Saloon\/Sedan 310PS 8Y (North American\/Non-OPF Models Only)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-sports-cat-downpipe-audi-s3-2-0tfsi-quattro-saloon-8y-na-non-opf-22\"\u003eMilltek Downpipe \u0026amp; Sports Cat Audi S3 2.0TFSI Quattro Saloon 8Y North American Non-OPF 22+\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":"HJS 200 Cell Sports Cat \/ Fits Milltek Cat Back Only","offer_id":56392718057857,"sku":"MIL-SSXVW635","price":1242.88,"currency_code":"GBP","in_stock":true},{"title":"HJS 200 Cell Sports Cat \/ Fits OE System Only","offer_id":56392718090625,"sku":"MIL-SSXVW636","price":1242.88,"currency_code":"GBP","in_stock":true},{"title":"200 Cell Race Cat \/ Fits Milltek Cat Back Only","offer_id":56392718123393,"sku":"MIL-SSXVW638","price":931.46,"currency_code":"GBP","in_stock":true},{"title":"200 Cell Race Cat \/ Fits OE System Only","offer_id":56392718156161,"sku":"MIL-SSXVW637","price":931.46,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXVW635_1.jpg?v=1791891207","url":"https:\/\/milltekexhaustshop.com\/products\/milltek-sports-cat-downpipe-audi-s3-2-0tfsi-quattro-saloon-8y-opf-gpf-20","provider":"Milltek Exhaust Shop","version":"1.0","type":"link"}