purchased slip on system. shop commented on ease of fitment
sounds awesome. I am planning on adding the HFC section next. In my opinion, this is everything it was promised to be. When driven gently, is no more intrusive than OEM, but when punched hard, is present in a very inviting way......I can see why BMW would purchase these for their ultimate Road/ Track cars (M3 GTS)
Last edited by sbm3; 03-25-2010 at 05:37 PM.
Reason: correction of typos plus additional information