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      02-02-2013, 02:20 AM   #9
Amini77
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Drives: Alpine White '13 550i
Join Date: Nov 2011
Location: Tarzana, CA

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2013 BMW 550i  [0.00]
Quote:
Originally Posted by SDemetris View Post
Not that loud. I have PE which is res-less and cat delete and i would say its a good volume
Secondary cat delete or primary? Don't the primary cats on the headers, if taken out, release more power than taking out the secondary cats?
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