Does Engine Modifications Cause Harm?
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06-02-2011, 01:31 AM
drop a gear and...
Drives: 2010 M3
Join Date: Mar 2011
Location: Houston, TX
I didn't buy into the high flow air filter.. I just removed mine
Pretty sure I picked up at least 20hp
WTB - 2006/05 ZCP 6MT M3 w/ under 85k (Link to WTB)
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