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2.5" Stainless DPF Delete / De-Cat Downpipe for 1.9 8v & 2.0 16v Audi A4 B7 with GTB Turbo (Adapter Flange)

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  • Downpipe
  • Downpipe Welds
  • Downpipe Welds
  • Downpipe
  • Downpipe Welds
  • Downpipe Welds


Darkside Stainless 2.5" DPF Delete / De-Cat Downpipe 

 This 2.5" Stainless Steel Downpipe is designed for use with GTB Turbo fitted with adaptor plate (not tubular manifold) as well as removing the Catalytic Converter (CAT) and/or Diesel Particulate Filter (DPF) on the Audi A4 B7 1.9 8v & 2.0 16v Engines

The Downpipe is made in house from 2.5" Stainless Steel TIG Welded

The Pipe reduces down to the stock exhaust size to slot nicely into the standard system or any system designed to work with the stock downpipe

This downpipe will fit the following vehicles listed below:

Audi A4 B7 - 2005 - 2008 - BRB 116 / BVG 121 / BVF 126 / BLB, BRE 140 / BVA 163 / BRD 170

 Including Quattro

GTB Adapter Flanges can be found here -

Our DPF Delete Pipes are supplied with only a Lambda Sensor Boss. The Pre-Turbo EGT Boss is located in the Exhaust Manifold on the Turbocharger. All other EGT and Pressure Sensors are not required when removing the DPF, leaving them in the downpipe can eventually lead to sensor failure, creating a fault in the ECU and possibly a Check Engine Light in the Instrument Cluster. With the correct DPF Delete Software, these sensors are removed entirely so they can be unplugged and removed from the car. If your tuner cannot remove these faults, the sensors should be left plugged in and wrapped out of the way

Made in the UK 

Darkside Developments accepts no responsibility for the use of this part on the public highway where removal of emissions controls is prohibited. It is the customers responsibility to ensure they comply with rules and laws relating to their home country

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