View Single Post
      09-19-2013, 05:05 PM   #6
Brosef's Avatar
Drives: 2011 M
Join Date: Aug 2009
Location: Chicago

Posts: 2,191
iTrader: (3)

I paired it with a challenge sport x-pipe. was the best of both worlds - very deep at low RPM's and really high pitched at high RPM's. but then with the valves closed, it was as quiet or more quiet than stock.
Brosef is online now   United_States
Reply With Quote