Free up your 2021-2025 B9.5 Audi A4/A5/Q5 40TFSI/45TFSI 2.0T’s potential with the CTS Turbo High-Flow cat.
This high flow cat downpipe is specific to the B9.5 facelift platform which uses a V-band style connection at the turbocharger, making it a perfect fit for the 40 TFSI or 45 TFSI Hybrid models.
3.5″ diameter stainless steel piping with a high-flow catalytic converter is matched perfectly to a billet v-band flange, allowing for optimal flow as exhaust gases transition from the turbocharger to the rest of the exhaust system. Substantial power gains, improved exhaust flow and a more sporty sound are the main benefits from installing the CTS downpipe.
Product features
- Designed using the latest 3D prototyping technology for perfect fit into factory location
- High-flow catalytic converter
- Large 3.5″ stainless steel piping, billet stainless steel flanges
- Flanges are fully welded inside and out
- Welded stainless steel mounting bolts for easy installation (saves you a lot of time)
- New gasket and copper lock nuts are included, if you wish to renew the turbo gasket: 5Q0253115C
- Not recommended for crackle/aggressive overrun tunes
- Compatible with factory or aftermarket cat-back exhaust systems
To remove the CEL that will occur, proper tuning software must be used.
Fitment (for Borg Warner turbocharger 06N145702D):
- 2021-2025 Audi A4 2.0T 40TFSI/45TFSI (B9.5)
- 2021-2025 Audi A5 2.0T 40TFSI/45TFSI (B9.5)
- 2021-2025 Audi Q5 2.0T 40TFSI/45TFSI (B9.5)
