View Single Post
      09-27-2011, 03:41 AM   #4
RaptorKTM
Colonel
RaptorKTM's Avatar
United_States
231
Rep
2,366
Posts

Drives: 1 M Coupe
Join Date: Apr 2006
Location: San Diego

iTrader: (1)

Garage List
2011 BMW 1 M  [0.00]
How much HP gain do you feel there will be by doing the downpipe in addition to the rest of the system.
Appreciate 0