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      04-07-2007, 09:30 PM   #68
Edman951
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Drives: F10 550xi, Alpine white
Join Date: Nov 2006
Location: Montreal, Quebec

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Using stock diverter valves as BOV doesn't work.
Why you ask.

The dump side stays open when under vacuum.
So when you drive DIRTY unfiltered air goes into your motor via the dump tube tru the diverter valve.
BIG NO NO.

Didn't you notice the vacuum suckting on the pipe you disconnected?