Milltek Turbo-back Exhaust (No Cat) for Audi TT Mk2 TT RS Coupé 2.5-litre TFSI quattro (2009-2014) – Sharper Sound, Reduced Back Pressure
This is Milltek's large-bore downpipe with hi-flow sports cat for the Audi TT Mk2 TT RS Roadster 2.5-litre TFSI quattro. 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 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 excluding Hi-Flow Sports Cat
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Pipe Diameter: 76.2mm (3")
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EC Approved: No
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Race System: Yes
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Fitting Time: approx. 4 to 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
- 76.2mm (3") pipework
- Replaces the standard exhaust from the catalytic converter back, so the factory cat is retained
- Designed, developed and manufactured in the UK by Milltek Sport
Fitment
- Audi TT Mk2 TT RS Coupé 2.5-litre TFSI quattro (2009-2014)
- Audi TT Mk2 TT RS Roadster 2.5-litre TFSI quattro (2009-2014)
Not suitable for: the Audi TT Mk2 TTS quattro, which needs the Milltek Cat-back Exhaust Audi TT Mk2 TTS Quattro 08-14; the Audi TT Mk2 3.2 quattro, which needs the Milltek Cat-back Exhaust Audi TT Mk2 3.2 Quattro 06-10; the Audi TT Mk2 2.0 TFSi 2WD, which needs the Milltek Cat-back Exhaust Audi TT Mk2 2.0 TFSi 2WD 06-11.
Installation
Milltek quotes a fitting time of approx. 4 to 5 hours. Please note: Propshaft requires removing and the engine subframe lowering to allow O.E part removal. Before ordering, note: 3-inch Race System with cat bypass. Custom ECU tuning required. Uses OE Tips and includes Active Exhaust Valve (works with Sport button to release extra sound when required). We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.
Will it fit the Audi TT Mk2 TT RS Roadster 2.5-litre TFSI quattro?
Yes. Milltek lists this part for the Audi TT Mk2 TT RS Roadster 2.5-litre TFSI quattro as well as the other models in the fitment list above.
Does it fit the Audi TT Mk2 TTS quattro?
No. For that car, choose the Milltek Cat-back Exhaust Audi TT Mk2 TTS Quattro 08-14.
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?
No. It fits behind the factory catalytic converter, so no software changes are needed.
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. 4 to 5 hours. Note: Propshaft requires removing and the engine subframe lowering to allow O.E part removal.
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.
