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      03-10-2013, 11:21 AM   #227
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Drives: 2015 Alpina B6; 430i; X5 40e
Join Date: Jul 2010
Location: Orange County, CA

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I found this interesting:
Quote:
Originally Posted by Terry @ BMS
A few comments....

....3) During testing we opened up the airbox to simulate a high flow intake and determine the potential for intake power gains. In doing so we found exactly zero horsepower gained even at these high boost levels. The factory airbox is simply not a restriction at 300rw. For this reason we suggest you use only the factory airbox with the N20 platform. Companies claiming gains with intakes on this platform are fooling themselves and/or you.
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