Challenge Street mid + M performance catback. Anyone?
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03-22-2013, 01:31 PM
BMW CCA Boston Chapter - Member
Drives: 2011 E90 M3, ZCP
Join Date: Apr 2007
chris s: I'm interested... is that raspy? any sound clips?
No raspy sound, just a classy, more aggressive exhaust sound without being too loud. Also no drone at all.!
Sorry I don't have any sound clips.
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