BMW S55 were once called the worst sounding ///M engine, transform it today with our Resonated Equal Length Midpipe! Absolute NO drone Louder exhaust note Louder turbo whistle sound Deep Bassy sound Solid shift fart Solid crackles / burbles Smoother drive / acceleration SS304 1.5mm thickness, 3 years warranty on crack OR defects Perfect fitment / clearance against all the factory braces / plate. For more details, contact us at [email protected] Video was recorded by smartphone WITHOUT rode mic.