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      08-03-2020, 09:40 PM   #7
horrizenashisland
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Drives: 2017 440i 6MT
Join Date: Jun 2020
Location: RI

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Can someone confirm me that M performance exhaust is just the muffler and MPPSK will straight pipe the who exhaust system?
Also does anyone have M performance exhaust with any mid pipe? How much difference will the mid pipe add?