Fits 2008 BMW 328i E90 The stock muffler has been completely removed leaving all other exhaust components in place. The collector with primary coils, secondary coils and resonator remained intact. The exhaust pipes were moved from the old muffler to the new one. Hangars were used in conjunction with OEM mounting points to secure the muffler in place. Pros: Noticeable difference in the 1500-4000 rpm range, more breath and more bass. Great sound at start/idle as well as in motion. "Decent Response" - doesn't sound like a lawnmower (think late '90s Civic with AutoZone mufflers and 3.5" tailpipes) but allows for the natural sound of the N52 inline-6. Much lighter than the standard E90 muffler. Cons: In Sport mode, the sound isn't as hoarse/low. Maybe just a little too quiet for my taste. video - cold start,