2.0T Race Test Pipe

The CTS Turbo race test pipe is engineered to enhance the performance of your 2021-2025 B9.5 Audi A4/A5/Q5 40TFSI/45TFSI 2.0T. Designed with a V-band style connection specifically for the B9.5 facelift platform and its Borg Warner turbocharger (06N145702D), this test pipe is a direct fit for the 40 TFSI and 45 TFSI Hybrid models. Constructed from large 3.5″ diameter stainless steel piping and featuring a billet stainless steel flange, this component is designed for optimal exhaust gas flow transitioning from the turbocharger. The flanges are fully welded inside and out, and the inclusion of welded stainless steel mounting bolts simplifies installation. New gaskets and copper lock nuts are provided, with a specific part number (5Q0253115C) mentioned for renewing the turbo gasket. This race-specific test pipe is intended for competition use and is not legal for highway or street vehicles. To avoid a check engine light (CEL) that will occur upon installation, proper tuning software is required. CTS Turbo highly recommends Boost Dynamic Tuning, with Stage 2 ECU performance tune options available for both A4/A5 45TFSI and Q5 45TFSI B9.5 models. The product is compatible with factory or aftermarket cat-back exhaust systems and is safe for crackle/aggressive overrun tunes.