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      02-07-2013, 07:56 PM   #21
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Drives: '14 F10 M5 CP
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Originally Posted by cmetter View Post
This is the EAS mod. ACM mod bypasses the center pipes and goes straight through (much louder)
EAS is the bypass mode same as the ACM.

Look at their website, you can clearly see the only cut into the part of the muffler that has no packing by the inlets/helmholtz chambers.
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