EGO-X 3″ valved exhaust system for Audi A6/A7 C7 (4G)

This EGO-X / Bull-X valved exhaust system for Audi A6 and A7 C7 models is manufactured using MAG welding and consists of absorption silencers without chambers. The pipe diameter is 3 inches (76 mm), then continuing as 2 × 63.5 mm to the rear silencers.

Technical details

• Pipe diameter: 3″ (76 mm)
• Pipe material: stainless steel
• Absorption silencers: hand-made
• System from the pre-silencer onwards
• MAG-welded
• Recommended exhaust tips: type 1, type 2, type 5, type 6 or type 7

Scope of delivery

• Exhaust system from the catalytic converter onwards
• Wiring for connection to the vehicle’s electrical system
• Vacuum hose for connecting the Bull-X Tronic control unit to the exhaust valve
• Exhaust tips (available separately)
• Fitting instructions
• Fitting hardware
• Bull-X Tronic control unit (when selecting the ECE version)

If the vehicle has drive-profile selection, the valve can be controlled through this function. For vehicles without drive-profile selection, a supplied switch can be used. The switch’s LED indicates the valve position: the light is off when the valve is open and illuminated when it is closed.

The Bull-X Tronic control unit provides two operating modes:

• Sport (Dynamic, Race): within the limits of the ECE requirements, the valve remains open while driving and is always closed when stationary.
• Comfort: the valve remains closed, but opens while driving within the limits of the ECE requirements once the throttle is opened to 75% or more.

Road use: ECE approval applies only when the Bull-X Tronic control unit with ECE approval is selected; road use also requires combination with an EG-approved catalytic converter. Other control and catalytic-converter configurations are intended exclusively for track use.

Suitable for: Audi A6 VII (4G/C7), Audi A7 I (4G).

Manufacturer’s vehicle data

• EGO-X/ Bull-X Valved Abgasanlage 3″ Audi A6/A7 C7 (mit ECE*)

Original product name by HG Motorsport (»z.B.« = e.g.). Please check model, year and engine of your vehicle before ordering; if in doubt, contact us and we will check for you.

Approval

Only the version marked “road legal” has a European ECE / EC approval (Bull-X Tronic controller with ECE or the HJS EC catalytic converter). Versions marked “no ECE, track use only” have no approval and are not permitted for road use. If in doubt about the version, contact us and we will check for you.