DeutschTuning proudly offers Active Autowerke Signature X-Pipe BMW E90/E92 M3. Active Autowerke is proud to release the highly anticipated Signature Track Pipe with X-Pipe and Connecting Pipes for the BMW E9X M3.This exhaust system was designed and engineered to work with most after-market exhaust systems/mufflers on the market today without the need to cut, weld or modify anything. It is a true bolt-on that can be performed by most.This system eliminates the secondary cats and the primary cats meaning it is designed for off road use. There is also a High Flow Cat option available via V-Band clamp.Active Autowerke is able to improve on the factory X Pipe design by a scavenging effect that yields high horsepower gains.Dramatic weight savings are also gained when one compares the factory system at 40 lbs and the Active Autowerke Signature X Pipe weighting at a mere 25 lbs.Noticeable gains have been measured on the Active Autowerke Mustang Chassis dyno with a 12+ RWHP when adding this X Pipe to our Signature exhaust system and as much as 10+ RWHP when used to the BMW stock exhaust. The Active Autowerke X Pipe system is constructed of 100% 304 brushed stainless steel and has a industry standard warranty against rust. This latest addition to the Signature line up is a must for the true Enthusiast looking for performance increases. Durable 100% 304 Stainless Steel. Increase of 12+ RWHP. Completely Bolt on with Factory Style Flanges. No Cutting Required. Install to all systems that use factory style fitting