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      06-27-2012, 11:06 AM   #13
tom @ eas
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Drives: BMW
Join Date: Nov 2005
Location: Anaheim, CA

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Quote:
Originally Posted by Leonardo629 View Post
M3 comes with a cold air intake from factory, gains have been seen with aftermarket high flow filter and bigger elbow tube..
Exactly. The airbox leave very little on the table for improvement.

~10-12hp gains can be seen switching to the the Macht Schnell S2 intake, which retains the factory airbox.
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