Active Autowerke X3M / X4M Signature Equal Length midpipe level 2 Our Carbon Fiber tips have

Our Carbon Fiber tips have a genuine plain-weave carbon sleeve that is riveted to our black chrome base that provides an elegant

The Active Autowerke race only exhaust system is constructed of 100% 304 brushed stainless steel and has a industry standard warranty against rust

detailed remapping to the entire DME we have been able to increase your S54's output by 14 HP and 11 ft lbs of torque on a stock BMW E46 M3 with factory settings for a normal street car

Upon analyzing the F8X exhaust

Up to 100 Ft / LB Rear wheel FT/LBs measured on the dyno

Active Autowerke X3M / X4M Signature Equal Length midpipe level 2 Our Carbon Fiber tips haveAfter extensive research and development, ACTIVE AUTOWERKE has announced GEN 2 of our EL midpipes. We worked with our factories to create specially developed RESONATORS that remove rasp from the exhaust tones with minimal change in the volume of the sound. A side benefit is that this also resulted in a reduction in the "2k buzzing" annoying to some BMW owners as well as a reduction in the cold start rattle from the factory. We are recommending to