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Old 02-09-2012, 02:52 PM   #4
Registered User
Join Date: Mar 2009
Location: UK
Posts: 1
My Ride: 330 Ci Sport
Hey guys, my 330Ci M Sport had similar issues and turned out to be a split in the intake rubber hose, the small pipe that cmes off the main intake pipe to the throttle body. This is where they usually split.... Might be worth a look...

Item 6 on here
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