CTS High Flow Catted 3.5" Downpipe - Audi 8.5V/8Y RS3 8S TTRS 2.5T EVO

Stage 2 tuning is required in order to remove the CEL.

Late 2025, CTS Turbo announced our new single 3.5″ High-Flow CAT for 2018 Audi 8.V/8Y RS3/8S TTRS with 2.5L TFSI EVO (EA855) engine.

This stainless steel high-flow downpipe that allows the user to remove the restrictive factory “main catalytic converters". Y pipe included in this kit for fitting the factory catback exhaust.

- Single 3.5″ race downpipe
- 200 cell CAT
- Durable 304 stainless steel- Laser cut flanges and precision machined v-band
- Factory-like placement of O2 sensors
- Designed using the latest 3D scanning technology
- Exhaust flow simulated with CAD software to ensure optimal flow routing
- Aggressive sound – really makes that 2.5T scream
- No drone under normal driving conditions

Fitment:

- 2018 Audi 8V/8Y RS3 2.5T EVO (EA855)
- 2018 Audi TTRS 2.5T EVO (EA855)