Thread: Anyone wondering what inside a stock muffler looks like? (pics inside)
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      01-08-2013, 10:14 AM   #16
Gugs
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Drives: E92 JetBlack
Join Date: Jul 2012
Location: Long island

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Quote:
Originally Posted by SfValley335i
It really is a cat, OP might have shot his out if he has 2step or something...
They are resonators. There are no secondary cats as the newbs/lemmings seem to think.
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