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Old 03-30-2012, 07:57 PM   #2
fastjasonbmw
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Join Date: Sep 2011
Location: CO
Posts: 241
My Ride: 330Xi
I know on the newer M57 diesel US engine the flaps are all connected to the same rod that is moved by a single actuator. Yours is probably very similar. I would say remove the manifold and check the flaps for freedom
of movement, maybe the ports have some carbon build up hindering flap movement.
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