CTS Turbo B5 Audi A4 1.8T Test Pipe

Code: CTS-EXH-TP-0001-B5
(3 customer reviews)

Original price was: US$149.99.Current price is: US$127.49.

In Stock

Disclaimer * 

Included Warranty

12 Months
All CTS Turbo products are warrantied against manufacturing defects for a period of 12 months from the date of invoice. Warranty does not cover abuse, misuse, consequential damages, normal wear and tear, improper installation, or damages resulting from racing. Warranties only apply to the original owner. If a product is found defective the customer will receive, at the discretion of CTS Turbo, free repair or replacement. Warranty on other manufacturers will be processed under their terms.


The CTS B5 A4 1.8T test pipe is the premier test pipe for your B5 Audi A4 1.8T.  Our test pipe is designed to seamlessly fit in place of your restrictive stock catalytic converter, which is situated immediately after the turbocharger.  Our test pipe features 3″ stainless steel piping, smooth mandrel bends, two 02 sensor bungs with an option for a third.  Substantial power gains, improved exhaust flow and a more throaty sound are the main benefits from installing our test pipe.  Upon inspection you will notice smooth mandrel bent piping with seamless transitions from the turbocharger to the exhaust system.  In addition to being one of the best bang for the buck performance upgrades for A4 owners our test pipe is also very attractive piece.  Each 3″ test pipe is mandrel bent, hand tig welded.  Do you need an additional 02 bung for data logging?  Well that’s no problem!  Tig welding additional 02 bungs can be done for an additional charge.


  • 1997-2001 B5 Audi A4 1.8T

Product Details:

  • T304 stainless steel construction
  • Mandrel bent stainless steel
  • Fully tig welded design
  • Install hardware included
  • Throaty sound
  • Great power upgrade

To remove the CEL that will occur, proper tuning software must be used. CTS Turbo recommends choosing a High Flow Cat for the sake of our environment!

Use of stage 2 software upgrade is strongly recommended.

Additional information

Weight 10 lbs
Dimensions 34 × 12 × 7 in

3 reviews for CTS Turbo B5 Audi A4 1.8T Test Pipe

  1. Karen Kuhn (verified owner)

    Superb Quality, extremely well built its heavy duty very thick flanges, and sounds amazing paired with a 3inch catback with k03/k04 setup.

  2. Karen (verified owner)

    amazing quality, sounds great.

  3. Damien D. (verified owner)

    Looks awesome! Fits awesome!

Add a review



Make Model Year Generation
Make Model Year Generation
AUDI A4 1996 - 2001 B5