EGO-X 3" catback exhaust system for Audi S4/S5 B9 3.0 TFSI models:
Caution: The exhaust systems with ECE are not affected by the "flap ban" and may continue to be used legally in road traffic in Germany.
This EGO-X exhaust system for Audi S4 and S5 B9 models is processed by TIG welding and handmade. It consists of absorption silencers, without chambers. The pipe diameter is 2x 63.5 mm from the OEM pipes to the end silencers, at the tailpipe connection 4x 63.5 mm.
While driving, you´re able to control the exhaust flap. If your vehicle has got "travel profile selection", it will also be possible to control it by this. For vehicles without "travel profile selection", you can control it too, but by a supplied button. You can get the button in silver or black. The button glows in red, green, blue or white.
Light on: Valve closed, Light off: Valve open.
Generally, the Bull-X Tronic Control Unit offers two options for control:
- Sport (Dynamic, Race): the flap is always open, except when standing
- Comfort mode (the flap opens from 75% open throttle position, otherwise the flap is always closed)
Note: A subsequent manipulation of the power supply from the control unit by means of a switch will invalidate the operating permit, since the flap would thus be open when stationary.
According to ECE directives in Germany, the flap is not allowed to be open in the stand.
This Catback Exhaust System is ECE-approved, so that it can be used without extra entry in your vehicle papers.
As far as You´are purchasing an EGO-X exhaust system, you´ll receive an exclusive T-Shirt and a sticker pack of EGO-X for free ! These exclusive products are only available at a purchase of an EGO-X Exhaust System and not on general sale!
Suitable for following Models:
Audi S4/S5 B9 3.0TFSI
- Pipe diameter: 2x 63,5 mm til end silencer, then 4x 63,5 mm at the tailpipes
- Pipe material: stainless steel
- absorption silencer: handmade in our company
- TIG welded
- ECE type-approval
Enhanced in Delivery:
- Catback Exhaust system
- Bull-X Tronic Control Unit
- Connection materials to connect the control unit to the on-board electronics
- Vacuum hose for activation of the exhaust flap
- Tailpipes (optional available)
- Installation Manual
- Mounting material
BULL-X Exhausts produces exhaust systems at the highest level
Bull-X is a trademark of HG Motorsport GmbH and deals with the development, design and manufacture of high-performance exhaust systems. Each product is 100% Made in Germany and hand made by our company. For more informations about us, click here.
EGO-X is a product line of Bull-X Exhausts. The special features of this line are the processing in TIG welding, the materials and the possibility of a registration free flap exhaust system.
More information can be found here (German language).