Good day, I liked to upgrade my end-shell steamer to the BMW Performance muffler system. The reason for this is that my personal is a little too quiet but only something. I have the normal exhaust, driving 650i bj. 2012 Individually without M package. My exhaust has become a bit too quiet over time, does not necessarily want it to be loud. It only had to be the V8 bubbling more to hear, because of the consideration to install the BMW Performance muffler system. H at one of you experiences with the facility, thank you for your help.