EGO-X Catback exhaust system for Audi S1 models. Available with ECE approval if you choose the Bull-X Tronic controller.
- Pipe size: 3" (76mm)
- Made of stainless steel
- Catback
- TIG welded
Included in delivery:
- Catback exhaust system
- Necessary wiring for the flap controller (select desired connection before adding to cart)
- Necessary mounting hardware
- Installation instructions
The exhaust system can be ordered in two different versions:
*With ECE approval*
Only when choosing the Bull-X Tronic controller
An ECE-approved exhaust system does not require modification inspection and is approved for road use. When driving, you can choose between Comfort and Sport modes for how the flaps operate. If your car has a driving mode selector, you can also control the flap operation with it. Vehicles without a driving mode selector can control the flap operation with the separate on/off button included. The button is backlit; when the light is on, the flaps are closed, and when the light is off, the flaps are open. The exhaust flaps are controlled within the limits allowed by ECE approval, regardless of the driving mode.
Bull-X Tronic offers two options for exhaust flaps
- Sport (Dynamic, Race): Within the limits allowed by ECE approval, the flap is always in the open position. When the car is stationary, the flap is always in the closed position.
- Comfort mode: The flap is always in the closed position, but within the limits allowed by ECE approval, the flap opens when at least 75% throttle is applied while the car is moving.
*Without ECE approval*:
If you choose one of these three options, Bull-X Tronic "Race", flap controller with switch, or flap controller with remote control, the product is not ECE approved.
Bull-X Tronic "Race" differs from the ECE-approved model in that the exhaust flap can be opened even when stationary, but when driving, depending on the driving mode and throttle position, the flap operates similarly to the ECE-approved model.