The CTS decat pipe for the Audi A4 B7 2.0T replaces the restrictive original catalytic converter, which is located directly behind the turbo. The pipe is constructed from 3-inch stainless steel with smooth mandrel bends and two O2 sensor bungs, with the option for a third.
Significant power gains, improved exhaust gas flow and a fuller, deeper sound are the key benefits. As well as being one of the best value-for-money upgrades for A4 drivers, it’s also a beautifully crafted piece of work. The CTS catback exhaust fits straight onto it without any hassle, making future upgrades straightforward. Do you need an extra O2 bung for data logging? It’s included at no extra cost.
The decat pipe fits the original turbo and the CTS-TR-1070 on the Audi A4 B7 2.0T with either a manual or automatic gearbox. It does not fit CVT models or front-wheel-drive versions, and is only suitable for left-hand-drive cars.
Features
- T304 stainless steel
- Fully TIG-welded design
- 3-inch stainless steel pipework
- Two O₂ sensor bungs, with a third O₂ bung supplied for a wideband sensor
- Fitting hardware included
- Full, deep sound
- Noticeable power gain and improved exhaust gas flow
- The CTS catback exhaust fits straight onto it
- Suitable for the standard turbo and the CTS-TR-1070
- Fits manual and automatic gearboxes, but not CVT or front-wheel drive
- Fits left-hand drive cars only
- To resolve the engine fault light, the correct tuning software is required; a Stage 2 software upgrade is strongly recommended
Technical specifications
- Material: T304 stainless steel
- Diameter: 3 inches
- Manufacturing technique: mandrel-bent, fully TIG-welded
- O2 bungs: two, plus a third included for a wideband sensor
- Weight: 4.5 kg
Contents of the set
- CTS decat pipe, 3 inches, Audi A4 B7 2.0T
- Third O₂ bung for a wideband sensor
- Fitting hardware
- Installation instructions
Frequently asked questions
Do I need software?
Yes. To resolve the engine fault light that may appear, the correct tuning software must be used. CTS Turbo recommends a high-flow catalytic converter for environmental reasons and strongly advises a Stage 2 software upgrade.
Does the decat pipe fit all A4 B7 2.0T models?
The pipe fits cars with manual or automatic gearboxes, but not CVT models or front-wheel-drive versions. Furthermore, it only fits left-hand-drive cars.
Can I connect a catback exhaust to it later?
Yes, the CTS catback exhaust connects directly to this decat pipe.
Can I connect a wideband sensor?
Yes, a third O2 bung is included at no extra cost for a wideband sensor or for data logging.
