View Single Post
      01-11-2012, 04:03 PM   #86
ObeyMyFast
OMGWTFBBQ
0
Rep
19
Posts

 
Drives: 2011 550i
Join Date: Dec 2010
Location: San Diego/Berkeley

iTrader: (0)

question: Would the reduction in back pressure cause a loss of power?

I've read over and over again about how straight pipes are stupid due to the loss of power, etc. and was curious if this mod would fall under a similar category, or if keeping the cats, etc, will not cause a large reduction in backpressure.