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      01-06-2012, 04:16 PM   #4
Jimefam
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Drives: 2011 550I Msport
Join Date: Jul 2010
Location: Cumming, Ga

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Quote:
Originally Posted by gatoman39 View Post
The computer controls the air fuel mixture. K&N is a total waste, it won't do anything in terms of performance.
I don't get your point, would you explain further? More air in the motor means more fuel to keep the same AFR which means more hp.
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