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      04-04-2010, 12:50 PM   #5
shiv@vishnu
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Drives: X1, 335i
Join Date: Sep 2006
Location: SF Bay, CA

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Unfortunately, the choke point is the inlet of the box, not the duct. So this modification should really do anything. We did a bunch of secret flow bench testing on the complete induction system last year and found all the restriction points: