Milltek Downpipe & De-cat for Audi S3 2.0 TFSI quattro 3-Door 8V.2 (GPF Equipped Models Only) (2019-2020) – Maximum Flow, Motorsport Use
This is Milltek's large-bore downpipe and de-cat for the Audi S3 2.0 TFSI quattro Saloon & Cabrio 8V.2 (GPF Equipped Models 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. 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.
It'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.
Because 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.
Specifications
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System Type: Large-bore Downpipe and De-cat
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Pipe Diameter: 76.2mm (3")
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EC Approved: No
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Race System: Yes
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
- 76.2mm (3") pipework
- Removes the factory catalyst for maximum flow (off-road and competition use only)
- Designed, developed and manufactured in the UK by Milltek Sport
Fitment
- Audi S3 2.0 TFSI quattro 3-Door 8V.2 (GPF Equipped Models Only) (2019-2020)
- Audi S3 2.0 TFSI quattro Saloon & Cabrio 8V.2 (GPF Equipped Models Only) (2019-2020)
- Audi S3 2.0 TFSI quattro Sportback 8V.2 (GPF Equipped Models Only) (2019-2020)
- Seat Ateca Cupra 300 4Drive (GPF/OPF EA888 Gen3 Models Only) - Pre-facelift (2019 onwards)
- Seat Leon ST Cupra 300 (4x4) Estate/Station Wagon/Combi (OPF/GPF Equipped Only) (2019-2020)
- Volkswagen Arteon 2.0TSI 280PS 4Motion (OPF/GPF Vehicles Only) (2019 onwards)
- Volkswagen Golf Mk7.5 R 2.0 TSI 300PS (GPF Equipped Models Only) - 76mm & EC Approved Systems (2019-2020)
- Volkswagen Golf Mk7.5 R Estate/Variant 2.0 TSI 300PS (GPF Equipped Models Only) (2019-2020)
- Volkswagen T-Roc R 2.0TSI 300ps (with OPF/GPF) (2019-2022)
Not suitable for: any model, engine or body style not listed above. Check your car before ordering.
Installation
Some versions: Includes GPF Delete - Must be fitted with OE cat-back system - Requires Stage 2 ECU Software. Some versions: Includes GPF Delete Section - Fits only with Milltek Sport Cat Back System - 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.
Upgrade Further
Also available from Milltek for this car: Milltek Cat-back Exhaust Audi S3 2.0 TFSI Quattro 3dr 8V.2 GPF 19-20.
Will it fit the Audi S3 2.0 TFSI quattro Saloon & Cabrio 8V.2 (GPF Equipped Models Only)?
Yes. Milltek lists this part for the Audi S3 2.0 TFSI quattro Saloon & Cabrio 8V.2 (GPF Equipped Models Only) as well as the other models in the fitment list above.
Is it road legal?
No. Removing the catalyst means the car will fail an MOT emissions test, so it is for off-road and competition use only.
Do I need a remap?
Yes. Milltek notes: "Includes GPF Delete - Must be fitted with OE cat-back system - Requires Stage 2 ECU Software". Without suitable software the engine management is likely to log faults.
Can I use it with my standard exhaust?
It 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.
Will removing the cat cause a warning light?
Without 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.
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.
