EGO-X/ Bull-X Valved catback exhaust system 3" Audi A4/A5 incl. S4/S5 B8 1.8-3.0 TFSI (with ECE*)

This EGO-X/ Bull-X valved exhaust system for Audi A4/S4 and A5/S5 B8 models is processed by TIG welding and handmade and consists of absorption silencers, without chambers. The piping diameter is about 3 inches (76mm).

Technical Details:
- Pipe diameter: 3" (76mm)
- Pipe material: stainless steel
- Absorption silencer: handmade in our company
- Catback
- TIG or MIG welded
- recommended tailpipes for S4/S5: Type 19: 4x89mm offset in stainless steel, carbon ot titanium
- recommended tailpipes for A4/A5: Type 1, Type 2, Type 5, Type 6 or Type 7

Delivery:
- Catback exhaust system
- Cable material for connection to the on-board electronics
- Vacuum hose for connecting the Bull-X Tronic to the exhaust valve
- Tailpipes (optionally available)
- Assembly instructions
- Mounting material
- Bull-X Tronic control unit (When selecting the ECE variant)

When purchasing this exhaust system you will receive an exclusive T-Shirt and a sticker package from EGO-X for free! These exclusive products are only available at a purchase of an EGO-X system and not in free sales!

With ECE type approval*:
*Applies only to the following selection in the field "Selection of the operating mode": Bull-X Tronic Control Unit (Incl. ECE approval)

This exhaust system has an ECE approval so that it can be moved in road traffic without being entered in your vehicle documents.
Caution: The exhaust systems with ECE are not affected by the "valve ban" and may continue to be used legally in road traffic in Germany.

While driving, you can choose whether you want to drive in Comfort or Sport mode. If your vehicle has a driving profile selection, it is possible to control it this way.
For vehicles without driving profile selection, this control can be done via a button that is included in the delivery. The button's LED lighting indicates whether the valve is currently open (light off) or closed (light on).
The control unit closes the valve automatically in all areas required by ECE regulations, regardless of which mode you are driving in.

Generally, the Bull-X Tronic offers two control options:
- Sport (Dynamic, Race): Within the approved scope of ECE regulations, the valve is always open. When stationary the valve is always closed.
- Comfort mode: The valve is always closed, but within the approved limits of ECE regulations it opens when the throttle is 75% open while driving.

For further information please watch our Info-Video.

Without ECE type approval*:
*Applies only to one of the 3 following selections in the field "Selection of the operating mode": Exhaust flap control kit via switch / Exhaust flap control kit via remote control / Bull-X Tronic "Race" Can-Bus Control Unit

If the vehicle has a driving profile selection (sport button), it is also possible tobe controlled via this.
For vehicles without driving profile selection, this control can be done via a button that is included in the delivery.
The button's LED lighting indicates whether the flap is currently open (light off) or closed (light on)

If you have purchased the Bull-X Tronic control unit, it is still possible to open the valve when the vehicle is stationary, but the control unit regulates the exhaust valve in driving mode in accordance with ECE regulations.

Generally, the Bull-X Tronic offers two control options:
- Sport (Dynamic, Race)
- Comfort mode (valve opens from 75% throttle position)

The version "without ECE type approval" is not permitted for use in public road traffic in Germany - use only for racing purposes!!

ATTENTION! The offered exhaust system is not permitted in the area of the German road traffic licensing regulations! With the ECE Bull-X Tronic control unit and the EC catalytic converter you may legally use your vehicle in public road traffic. The use of all other controls and/or catalytic converters is only intended for racing purposes. If, despite our advice, you install an exhaust system WITHOUT ECE approval, you will be liable to prosecution. Imminent consequences can be, among other things: expiry of the operating licence, immobilisation of the vehicle, charges for tax evasion, as well as possible investigations by the environmental authorities.