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      12-05-2016, 01:41 AM   #65
bdaddylo
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Drives: 2017 F80 M3
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Quote:
Originally Posted by martymil View Post
Quote:
Originally Posted by lightning View Post
I agree. Downpipes probably made the most difference.
downpipes = substantial hp & noise gain
mids = no gain or loss in hp & substantial gain in exhaust rasp and smell
In regards to mids, they provide slight gains in peak HP, but most of the gains are in the mid RPM range.
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1991 E30 M3/Brilliantrot
2017 F80 M3/AW
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