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      02-05-2013, 09:00 PM   #9
MJM
BMW CCA Boston Chapter - Member
 
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Drives: 2011 E90 M3, ZCP
Join Date: Apr 2007
Location: Massachusetts

Posts: 512
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Quote:
Challenge Street mid + M performance catback. Anyone?Anyone running this set-up? Any sound clips?
I am running the Challenge Engineering "Street" X-pipe with the Akrapovic slip-on if that is of interest to you.
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