Active Autowerke X3M / X4M Signature Equal Length midpipe level 2 exhaust gases exit the turbochargers

exhaust gases exit the turbochargers more efficiently—helping the turbos spool faster and reducing exhaust backpressure

This simply wasn't possible with the G5 or SIMON 3 as it proved too costly for our consumers

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

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

Upon analyzing the F8X exhaust

Active Autowerke X3M / X4M Signature Equal Length midpipe level 2 exhaust gases exit the turbochargersAfter 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