Milltek Downpipe & Sports Cat for Audi S3 2.0 TFSI quattro 3-Door 8V/8V.2 (Non-GPF Equipped Models Only) (2013-2018) – Improved Flow, Sports Catalyst
This is Milltek's large-bore downpipe with hi-flow sports cat for the Audi S3 2.0 TFSI quattro Saloon & Cabrio 8V/8V.2 (Non-GPF Equipped 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 ec approved (Yes, No) and versions to suit the factory or a Milltek system, so you can pick the setup that suits how the car's used.
It 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.
In 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.
Specifications
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System Type: Large Bore Downpipe and Hi-Flow Sports Cat
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Pipe Diameter: 76.2mm (3")
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
- High-flow sports catalyst flows better than the dense factory unit while still treating exhaust gases
- EC approved versions available
- Designed, developed and manufactured in the UK by Milltek Sport
Fitment
- Audi S3 2.0 TFSI quattro 3-Door 8V/8V.2 (Non-GPF Equipped Models Only) (2013-2018)
- Audi S3 2.0 TFSI quattro Saloon & Cabrio 8V/8V.2 (Non-GPF Equipped Models Only) (2013-2018)
- Audi S3 2.0 TFSI quattro Sportback 8V/8V.2 (Non-GPF Equipped Models Only) (2013-2018)
- Seat Leon ST Cupra 300 (4x4) Estate/Station Wagon/Combi (Non-OPF/GPF) (2017-2018)
- Volkswagen Golf Mk7 2.0TFSI Alltrack/Estate/Station Wagon/Combi 4-Motion (2016-2021)
- Volkswagen Golf MK7 R 2.0 TSI 300PS (ECE Approved & 76.2mm Systems) (2014-2016)
- Volkswagen Golf MK7 R Estate/Variant 2.0 TSI 300PS (2015-2017)
- Volkswagen Golf Mk7.5 R 2.0 TSI 310PS (Non-GPF Equipped Models Only) - 76mm & EC Approved Systems (2017-2021)
- Volkswagen Golf Mk7.5 R Estate/Variant 2.0 TSI 310PS (Non-GPF Equipped Models Only) (2018-2019)
- Audi A3 2.0 TFSI quattro Sedan 8V (US-only) (2014-2020)
- Volkswagen Arteon 2.0TSI 280PS 4Motion (Non OPF/GPF Vehicles Only) (2017-2019)
- Volkswagen Arteon 2.0TSI 280PS 4Motion (North American OE Valved Systems) (2019-2021)
Not every version fits every car in this list. Check the fitment shown for the option you select.
Not suitable for: the Audi S3 2.0 TFSI quattro 3-Door 8V.2 (GPF Equipped Models Only), which needs the Milltek Downpipe & Sports Cat Audi S3 2.0 TFSI Quattro 3dr 8V.2 GPF 19-20.
Installation
Some versions: EC-Approved. For fitment to the OE Exhaust System only and requires a Stage 2 ECU remap. Some versions: EC-Approved. Must be fitted with the Milltek Sport cat-back system and requires a Stage 2 ECU remap. Some versions: For Fitment with the OE Exhaust system only and requires a Stage 2 ECU remap. Some versions: Must be fitted with Milltek Sport cat-back system and requires a 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.
Upgrade Further
Also available from Milltek for this car: Milltek Turbo-back Exhaust & Sports Cat Audi S3 2.0 TFSI Quattro 3dr 8V 8V.2 Non-GPF 13-18, Milltek Active Valve Control Volkswagen Arteon 2.0TSI 280PS 4Motion Non OPF/GPF 17-19.
Will it fit the Audi S3 2.0 TFSI quattro Saloon & Cabrio 8V/8V.2 (Non-GPF Equipped Models Only)?
Yes. Milltek lists this part for the Audi S3 2.0 TFSI quattro Saloon & Cabrio 8V/8V.2 (Non-GPF Equipped Models Only) as well as the other models in the fitment list above.
Does it fit the Audi S3 2.0 TFSI quattro 3-Door 8V.2 (GPF Equipped Models Only)?
No. For that car, choose the Milltek Downpipe & Sports Cat Audi S3 2.0 TFSI Quattro 3dr 8V.2 GPF 19-20.
Is it road legal?
Some versions are EC approved; check the EC Approved line in the specification for the option you choose. Race versions are intended for track use.
Do I need a remap?
Yes. Milltek notes: "EC-Approved. For fitment to the OE Exhaust System only and requires a Stage 2 ECU remap". 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.
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.
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.
