Thread: -fs: Oem/acm/eas Exhaust Mod E9x M3 Socal/oc-
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      12-07-2012, 02:45 PM   #5
Cboy1
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Drives: 2008 E92 M3
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Originally Posted by JuRuKi View Post
whats the difference in the ACM mod? and the regular mod that replaces the perforated pipe?
To my understanding the OEM exhaust mod is a bit louder, brings out that real V8 grunt/growl.
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