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      12-31-2012, 09:54 PM   #8
Mike Benvo
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Drives: Harrop SC M3 / E46 M3 / 7Turbo
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2008 BMW M3  [5.00]
1990 BMW 735i Turbo  [5.00]
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Quote:
Originally Posted by Vic311 View Post
Correct me if I am wrong but that doesnt add power or torque..just custom maps the throttle response, removes the top speed govenor and cold start and bumps the redline up a couple of hundred RPM

OP: a free flow. headers back exhaust and drop in air filter is about all that can be done..but should be good for anywhere between 30-50 HP, I personally wouldnt do a pulley..not worth it imo
It does add power and torque, but this is just an added benefit of everything else.

Gains are 10-30hp dependent on mods/octane/conditions.

http://www.m3post.com/forums/showthread.php?t=748613
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