Thread: SoCal: if you have 3” catless downpipes but stock exhaust on 335i click here.
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      11-15-2012, 05:17 PM   #17
SeanS54
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Drives: F82 M4 ZCP
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I'm not in so cal... but I have MS down pipes and stock exhaust and the exhaust has zero drone and sounds stock... if you want it to be quiet, it definitely will be....
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