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      04-04-2010, 01:07 PM   #7

Drives: X1, 335i
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Location: SF Bay, CA

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Originally Posted by Si-135i View Post
But I am only after injecting extra cold air into the surrent flow, not increasing the amount of air by any significant amount
But what's colder than the ambient air that the factory duct is providing to the airbox. Again, the shortcoming of the whole induction system is that not enough of this air goes into the airbox due to the size of the duct at the inlet of the airbox.