View Single Post
      12-06-2012, 08:29 PM   #15
Private First Class
maxdriver's Avatar
Drives: 2013 135i M-sport 6-spd
Join Date: Nov 2011
Location: Titletown

Posts: 123
iTrader: (0)

No clue if it improves performance. I bought it for the freaking sound! It's a BMW part....can't imagine that it lowers performance....having said that, my 135i screams...performance and sound wise....!!!
maxdriver is offline  
Reply With Quote