Milltek Cat-back Exhaust for Audi A3 2.0T FSI 2WD 5 door Sportback (2003-2012) – Sharper Sound, Reduced Back Pressure
This is Milltek's cat-back system for the Audi A3 2.0T FSI 2WD 5 door Sportback. It replaces everything from the factory catalytic converter rearward with wider-bore pipework, a re-profiled mid-pipe and silencers tuned specifically for this platform, cutting back pressure and sharpening the exhaust note. The factory catalytic converter stays in place, so the car's emissions hardware is left as standard. It's offered in non-resonated or resonated versions, so you can pick the setup that suits how the car's used.
It's aimed at owners who want a noticeably different sound and a genuine, if modest, flow improvement without touching anything upstream of the cat: a straightforward bolt-on that doesn't need a remap or any other supporting mods to enjoy.
Specifications
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System Type: Cat-back
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Pipe Diameter: 69.85mm (2.75")
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Tip Style: Twin 80mm GT80
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Race System: No
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
- EC approved versions available
- Resonated (quieter) or non-resonated (louder) versions
- Designed, developed and manufactured in the UK by Milltek Sport
Fitment
- Audi A3 2.0T FSI 2WD 5 door Sportback (2003-2012)
Not suitable for: the Audi A3 2.0T FSI quattro 5 door Sportback, which needs the Milltek Turbo-back Exhaust & Sports Cat Audi A3 2.0T FSI Quattro 5dr Sportback 04-12; the Audi A3 2.0T FSI 2WD 3 door, which needs the Milltek Cat-back Exhaust Audi A3 2.0T FSI 2WD 3dr 03-12.
Installation
The fitting time varies by version; see the specification table for the option you choose. We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.
What's the difference between the resonated and non-resonated versions?
The resonated version adds extra silencing for a quieter, more refined tone. The non-resonated version leaves it out, so it is louder and more aggressive.
Does it fit the Audi A3 2.0T FSI quattro 5 door Sportback?
No. For that car, choose the Milltek Turbo-back Exhaust & Sports Cat Audi A3 2.0T FSI Quattro 5dr Sportback 04-12.
Is it road legal?
Some versions are EC approved; check the EC Approved line in the specification for the option you choose.
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?
It depends on the version. Milltek's fitting time for each option is shown in its specification table.
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.
