Thread: X-pipe 101
View Single Post
      05-11-2012, 03:37 AM   #13
avex8
Captain
avex8's Avatar
18
Rep
877
Posts

Drives: 11 E92 M3, 13 X3 35i, 14 650i
Join Date: May 2011
Location: San Diego

iTrader: (3)

Quote:
Originally Posted by KMIII View Post
What would be the difference in sound and power gains when comparing the challenge street to the other 2 models (Sports, Race). I know the Race is completely catless so it would have the greatest power increase. What would I be losing if I went with the Street version?
The street is the x-pipe only, it doesn't have the deleted primary cat. So you have to connect your oem primary cat onto it or get a turner test pipe and go cat less