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Old 11-20-2012, 02:37 AM   #163
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Join Date: Apr 2010
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Originally Posted by Snapasaurus View Post
Does anyone have a link to a diagram of the exhaust for the m56? A side by side comparison to a regular 325 exhaust would be loads of help too.
I don't have a diagram but the headers have unique cats, then another set of cats then the 330 rear muffler with the active exhaust flap.

An M54B25 has cats in the headers, a set of resonators, then a muffler.

Both run dual pipes all the way back to the muffler.
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