Milltek Turbo-back Exhaust & Sports Cat for Audi S3 2.0 T quattro 3-Door 8P (2006-2012) – Sharper Sound, Reduced Back Pressure
This is Milltek's large-bore downpipe with hi-flow sports cat for the Audi S3 2.0 T quattro 3-Door 8P. 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 2 tailpipe finishes, 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: Turbo-back including Hi-Flow Sports Cat
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Pipe Diameter: 69.85mm (2.75")
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EC Approved: No
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Race System: Yes
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Fitting Time: approx. 3 to 3.5 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
- 69.85mm (2.75") pipework
- Replaces the standard exhaust from the catalytic converter back, so the factory cat is retained
- Choice of 2 tailpipe finishes: GT-80 Polished, GT-80 Cerakote Black
- Designed, developed and manufactured in the UK by Milltek Sport
Fitment
- Audi S3 2.0 T quattro 3-Door 8P (2006-2012)
Not suitable for: the Audi S3 2.0 T quattro Sportback 8P, which needs the Milltek Turbo-back Exhaust & Sports Cat Audi S3 2.0 T Quattro Sportback 8P 07-12; the Audi S3 2.0 TFSI quattro 3-Door 8V.2 (GPF Equipped Models Only), which needs the Milltek Cat-back Exhaust Audi S3 2.0 TFSI Quattro 3dr 8V.2 GPF 19-20; the Audi S3 2.0 TFSI quattro 3-Door 8V/8V.2 (Non-GPF Equipped Models Only), which needs the Milltek Turbo-back Exhaust & Sports Cat Audi S3 2.0 TFSI Quattro 3dr 8V 8V.2 Non-GPF 13-18.
Installation
Milltek quotes a fitting time of approx. 3 to 3.5 hours. Please note (some versions): Propshaft requires unbolting from transmission for removal and installation. Some versions: Requires a Stage 2 ECU remap. Some versions: Requires a Stage 2 ECU remap. Ceramic Black Tips. We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.
Which tailpipe finishes are available?
You can choose from: GT-80 Polished, GT-80 Cerakote Black. The finish is cosmetic and does not change the sound.
Does it fit the Audi S3 2.0 T quattro Sportback 8P?
No. For that car, choose the Milltek Turbo-back Exhaust & Sports Cat Audi S3 2.0 T Quattro Sportback 8P 07-12.
Is it road legal?
Milltek lists this as a race part without EC approval, so it is intended for off-road and competition use.
Do I need a remap?
Some versions do. Milltek notes: "Requires a Stage 2 ECU remap". Check the notes for the version you choose.
Does it keep the factory catalytic converter?
Yes. It fits behind the factory catalytic converter, which stays in place.
How long does it take to fit?
Milltek quotes approx. 3 to 3.5 hours. Note: Propshaft requires unbolting from transmission for removal and installation.
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.
