Listen to the first video / sound clip of the BMW M Performance exhaust for the 2012 F30 335i 3 Series. Official BMW Description:
Developed using state-of-the-art CAD and FEM technology, this stainless steel exhaust system enhances the sound quality and volume of the hallmark BMW inline six-cylinder engine. A unique, high-tech look is provided by two chrome-plated 80 mm exhaust tips which are laser-engraved with the M logo. Exhaust backpressure is reduced and a sporty powerful tone is heard (without the droning noise typically associated with some aftermarket exhaust systems) with the BMW M Performance Exhaust System.