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      03-01-2013, 10:48 PM   #138
Second Lieutenant
Drives: 2011 E92 M3 DCT
Join Date: Feb 2012
Location: CO

Posts: 284
iTrader: (0)

Has anyone actually received and installed the Challenge catback exhaust? I don't see anywhere to actually buy it. Impressions on how it sounds compared to stock?
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