Milltek Cast Downpipe & Race Cat for Audi TT Mk2 TTS quattro (2008-2014) – Improved Flow, Sports Catalyst
This is Milltek's cast downpipe for the Audi TT Mk2 TTS quattro. It replaces the factory downpipe with a cast, less restrictive design at the point where the factory system is most restrictive, improving flow from the turbo outlet into the rest of the exhaust.
It's a solid first step for anyone building towards a bigger power upgrade, since the downpipe is usually the single biggest bottleneck in the standard exhaust.
Specifications
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System Type: Cast Downpipe with Race 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
- High-flow sports catalyst flows better than the dense factory unit while still treating exhaust gases
- Designed, developed and manufactured in the UK by Milltek Sport
Fitment
- Audi TT Mk2 TTS quattro (2008-2014)
Not suitable for: the Audi TT Mk2 2.0 TFSi 2WD, which needs the Milltek Downpipe & Sports Cat Audi TT Mk2 2.0 TFSi 2WD 06-11.
Installation
Before ordering, note: Cast Downpipe with 200 Cell Race High Flow Cat. For use with the 2.75 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 Cat-back Exhaust Audi TT Mk2 TTS Quattro 08-14.
Does it fit the Audi TT Mk2 2.0 TFSi 2WD?
No. For that car, choose the Milltek Downpipe & Sports Cat Audi TT Mk2 2.0 TFSi 2WD 06-11.
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?
Yes. Milltek notes: "Cast Downpipe with 200 Cell Race High Flow Cat. For use with the 2.75 and requires a Stage 2 ECU remap.". Without suitable software the engine management is likely to log faults.
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.
