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      12-15-2011, 11:51 PM   #52
Drives: 335i
Join Date: Feb 2011
Location: Ventura County, CA

Posts: 2,867
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2011 335i M-Sport  [2.00]
2009 X5  [5.00]
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just a dumb question - isnt it not good for our cars to run straight pipes??
dont you need some kind of back pressure
theriz is offline   United_States
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