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      05-19-2011, 01:02 PM   #105
hipnotic
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Drives: e92 335i
Join Date: Oct 2007
Location: So. Cal

Posts: 6,556
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2008 335i coupe  [3.50]
i have magnaflow mufflers and was wondering if i delete my secondary cats will it make my car that much louder or just a slight difference? In that e90 video I could barely tell a change in sound from stock to secondary cat delete or am I wrong?
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