BMW Tuning Forum
I'm very interested in the Remus Powersound for my 330. I like the idea of adjustable sound. Also, it comes in quad tail pipes and seems to be the only system for the 330 which does unless I want to spend >£1k.
Here is an E90 330 start and rev http://www.youtube.com/watch?v=arKoKd8JItc
And...