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      02-14-2010, 04:34 PM   #114
danchee
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Drives: E92 328i xDrive
Join Date: Dec 2009
Location: NYC


Posts: 67
iTrader: (0)

Opening up the box like that you are just sucking all the hot air from the engine bay. The power loss has gotta be pretty significant. Not to mention are you 100% sure the filter is attached securely? Any gaps would mean sucking all sorts of gunk into the engine.