CTS Turbo 2018+ B9 Audi S4/S5 V6T 3.0T (EA839) Test Pipe

CTS Turbo B9 S4/S5 3.0T (EA839) cat-delete test pipe is made to maximize exhaust flow for highest power gains. Do not compromise performance and sound with factory parts - unleash your B9 S4/S5 3.0T potential!

Designed using the latest in CAD technology; this part is made to fit perfectly in place of restrictive factory catalytic converter. Manufactured from T304 stainless steel, hand TIG welded and back-purged to ensure years of reliable performance.

In addition to unleashing the power and performance of your 3.0T, the CTS B9 S4/S5 3.0T EA839 test pipe will make your vehicle sound like an S-car really should. When installed with factory exhaust it produces a sporty growl with much more pronounced exhaust "crackle" on downshift. While up-shifting you will enjoy a confident "braappp!" as you bang through all 8 gears. The sound will be even louder if you already have an aftermarket exhaust system.

Product Details:

• Designed and tested on a real car in the real world


• T304 stainless steel, TIG welded back-purged construction


• Replaces restrictive factory catalytic converter


• Install hardware included (gaskets not included)


• Great power upgrade with uncompromising performance


• Incredible sporty exhaust sound, subtle when cruising


• No drone with factory exhaust


• Stunning polished finish for great looks

• 2018+ Audi S4 3.0T (EA839)


• 2018+ Audi S5 3.0T (EA839)

This part also goes by the following cross reference.

Cross Reference Part Number:

Fitment data is currently being updated for this part. Please contact us with your VIN to confirm compatibility.