CTS TURBO B9 AUDI A4/A5/ALLROAD 2.0T TEST PIPE

The CTS Turbo B9 test pipe is the premier test pipe for your B9 Audi A4/A5/AllRoad 1.8T/2.0T. It fits seamlessly in place of the restrictive stock catalytic converter sitting right after the turbocharger, freeing up exhaust flow for substantial power gains and a throatier sound. A flare measuring nearly 4" tapers to 3" for an optimal transition of exhaust gas from the turbo into the test pipe. It's one of the best bang-for-the-buck upgrades for B9 owners — and a sharp-looking piece.

Each 3" test pipe is mandrel-bent and hand TIG-welded, with one O2 sensor bung and an option for a second.

Product Details

• T304 stainless steel construction
• Mandrel-bent stainless steel
• Fully TIG-welded design
• Throaty sound
• Great power upgrade

Fitment

• 2017-2019 Audi A4 1.8T/2.0T
• 2017-2019 Audi A5 1.8T/2.0T
• 2017-2019 Audi AllRoad 1.8T/2.0T
• Does not fit right-hand drive
• Does not fit Gen 3 ROW EA888.3
• Does not fit 2020+ models with V-band connection at the turbocharger

A test pipe will trigger a CEL without proper tuning — Stage 2 software is strongly recommended. CTS Turbo recommends choosing a high-flow cat for the sake of the environment.

Emissions disclaimer: This product is not legal for sale or use on pollution-controlled vehicles operated on public roads and is intended for off-road, race, or closed-course competition use only. You are responsible for compliance with all applicable emissions laws; use on public roads may violate the Federal Clean Air Act (42 U.S.C. § 7522) and similar state laws. Please check your local laws before purchase and installation.

Ships from our Vancouver shop — KORE SPEED is proudly Canadian-owned, with no surprise cross-border duties for Canadian buyers. Questions on fitment? Email support@korespeed.com.