The CTS Turbo T304 stainless steel downpipe with a 3″ diameter and high-flow catalytic converter is designed for transverse Audi/VW 2.0T FSI and 2.0 TSI engines. The factory downpipe significantly restricts exhaust gas flow, which can affect performance, particularly on vehicles with software tuning installed.
The high-flow catalytic converter allows smoother exhaust gas flow. The downpipe features a CNC-machined flange at the turbocharger outlet, mandrel-bent T304 stainless steel pipes and a modular design for easier installation. Smooth transitions ensure optimal exhaust gas flow.
Product details
- 200-cell metal high-flow catalytic converter
- Seamless T304 stainless steel pipes
- T304 stainless steel flanges
- 100% TIG welded
- 3 lambda sensor bungs for use with different models
- Stainless steel clamps
- Compatible with factory or aftermarket cat-back exhaust systems
- Connects to the exhaust system via the factory slip clamp, which is not included
- Removable 60 mm diameter reducer for easier installation
- Optional fitting kit includes a gasket and 4 copper self-locking nuts
The product is intended for FWD vehicles and is not suitable for Quattro variants. It is compatible with BPY, BWA, CBFA and CCTA engines.
Stage 2 software is required to prevent the engine warning light from illuminating.
Not road-legal in the EU; the product is intended for competition use only.
Weight: 13.61 kg
Suitable for: Audi A3 II (8P), Audi TT II (8J), VW CC II (358), VW Jetta III (1K2), VW Passat B6 (3C).
Approval
This part has no TÜV certification (ABE, TTG or Teilegutachten).
Compatible vehicles (manufacturer data)
| Vehicle | Chassis | Years | Engine |
|---|---|---|---|
| Audi A3 | — | 2006–2013 | — |
| Audi TT | — | 2008–2009 | — |
| Volkswagen CC | — | 2009–2017 | — |
| Volkswagen GTI | — | 2006–2014 | — |
| Volkswagen JETTA | — | 2005–2010 | — |
| Volkswagen JETTA GLI | — | 2006–2010 | — |
| Volkswagen PASSAT | — | 2006–2010 | — |
Before ordering, check that the product matches your vehicle (model, year and engine). If in doubt, write to us — we will check for you.

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