Milltek Cast Downpipe & HJS Sports Cat for Audi A3 1.8 TSI 2WD 3-Door (2008-2012) – Improved Flow, Sports Catalyst
This is Milltek's cast downpipe for the Audi A3 2.0T FSI 2WD 3 door. 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 HJS High 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
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 A3 1.8 TSI 2WD 3-Door (2008-2012)
- Audi A3 2.0T FSI 2WD 3 door (2003-2012)
- Audi A3 2.0T FSI 2WD 5 door Sportback (2003-2012)
- Audi A3 2.0T FSI quattro 5 door SportBack (2004-2012)
- Audi S3 2.0 T quattro 3-Door 8P (2006-2012)
- Audi S3 2.0 T quattro Sportback 8P (2007-2012)
- Seat Leon Cupra 2.0T FSI 240PS (2006-2011)
- Seat Leon Cupra K1 (2007-2009)
- Seat Leon FR 2.0 T FSI 200-211PS (2006-2013)
- Skoda Octavia vRS 2.0 TSI (2010-2013)
- Skoda Octavia vRS 2.0T FSi (2006-2010)
- Volkswagen Golf Mk5 GTi 2.0T FSI (2004-2009)
- Volkswagen Golf Mk5 GTi Edition 30 2.0T FSi 230PS (2006-2009)
- Volkswagen Golf Mk6 GTi 2.0 TSI 210PS (2009-2013)
- Volkswagen Golf Mk6 R 2.0 TFSI 270PS (2009-2013)
- Volkswagen Jetta Mk5 GLI 2.0T FSI (2006-2010)
Not suitable for: any model, engine or body style not listed above. Check your car before ordering.
Installation
Before ordering, note: with HJS HQ 200 Cell High Flow Sports Cat. For Fitment to Milltek Sport 2.75" cat-back systems only. 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 A3 1.8 TSI 2WD 3dr 08-12.
Will it fit the Audi A3 2.0T FSI 2WD 3 door?
Yes. Milltek lists this part for the Audi A3 2.0T FSI 2WD 3 door as well as the other models in the fitment list above.
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: "with HJS HQ 200 Cell High Flow Sports Cat. For Fitment to Milltek Sport 2.75" cat-back systems only. 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.
