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      01-04-2013, 02:19 AM   #6
Top Gon
Bashar
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Drives: 2023 BMW Z4 M40i
Join Date: Jun 2010
Location: Bay Area, CA

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The Performance Exhaust is a muffler and resonator(delete) I believe.

...On a sidenote, why do muffler deletes have a sort of whistle sound to them at WOT? ( I have a custom one, but have heard others like Berk and sounds the same). Is there a way to get rid of that whistle? (bigger diameter?eliminate y-pipe?)
Appreciate 0