Milltek HJS Tuning ECE Downpipes for Audi S3 2.0TFSI Quattro Saloon/Sedan 310PS & 333PS 8Y (OPF/GPF Models Only) (2020 onwards) – Improved Flow, Sports Catalyst
This is Milltek's HJS Tuning ECE downpipe set for the Volkswagen T-Roc R 2.0TSI 300ps (MQB EVO Models with OPF/GPF). 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.
They'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.
Because they're type-approved, these can be run on a car that's used on the road, unlike a straight de-cat pipe.
Specifications
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System Type: HJS Tuning ECE Downpipes
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EC Approved: Yes
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Race System: No
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Fitting Time: approx. 3 to 4 hours (Milltek figure)
Key Features
- Made from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration
- Mandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow
- High-flow sports catalyst flows better than the dense factory unit while still treating exhaust gases
- EC approved
- Designed, developed and manufactured in the UK by Milltek Sport
Fitment
- Audi S3 2.0TFSI Quattro Saloon/Sedan 310PS & 333PS 8Y (OPF/GPF Models Only) (2020 onwards)
- Audi TT Mk3 TTS 2.0TFSI Quattro (OPF/GPF Models) (2019 onwards)
- Seat Cupra Formentor 2.0TFSI 4Drive 310PS & 333PS (MQB EVO EA888.4 OPF/GPF Vehicles) (2021 onwards)
- Volkswagen Golf Mk8 R 2.0 TSI 320PS (GPF Equipped Models Only) (2021-2024)
- Volkswagen Tiguan R 320ps EA888.4 MQB EVO (OPF/GPF Models Only) (2021 onwards)
- Volkswagen T-Roc R 2.0TSI 300ps (MQB EVO Models with OPF/GPF) (2022 onwards)
Not suitable for: the Audi S3 2.0TFSI Quattro Saloon/Sedan 310PS 8Y (North American/Non-OPF Models Only), which needs the Milltek Downpipe & Sports Cat Audi S3 2.0TFSI Quattro Saloon 8Y North American Non-OPF 22+.
Installation
Milltek quotes a fitting time of approx. 3 to 4 hours. Before ordering, note: Fits to OE & Milltek Sport OPF Back Systems - Does not Require ECU Tuning & ECE Approved with Milltek Sport OPF Back 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.
Upgrade Further
Also available from Milltek for this car: Milltek Filter-back Exhaust Audi S3 2.0TFSI Quattro Saloon 8Y OPF/GPF 20+.
Will it fit the Audi TT Mk3 TTS 2.0TFSI Quattro (OPF/GPF Models)?
Yes. Milltek lists this part for the Audi TT Mk3 TTS 2.0TFSI Quattro (OPF/GPF Models) as well as the other models in the fitment list above.
Does it fit the Audi S3 2.0TFSI Quattro Saloon/Sedan 310PS 8Y (North American/Non-OPF Models Only)?
No. For that car, choose the Milltek Downpipe & Sports Cat Audi S3 2.0TFSI Quattro Saloon 8Y North American Non-OPF 22+.
Is it road legal?
Every version of this part is listed by Milltek as EC approved.
Do I need a remap?
A 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.
Can I use it with my standard exhaust?
Yes. Milltek lists it for use with the factory (OE) exhaust system.
How is a sports cat different from a de-cat?
A 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.
How long does it take to fit?
Milltek quotes approx. 3 to 4 hours.
What is it made from?
T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.
Is there a warranty?
Yes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.
