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      12-19-2012, 03:50 PM   #3
Dackelone
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Drives: 135i Silber mit/Rot 6MT N54
Join Date: Feb 2010
Location: Bayern, Germany

iTrader: (1)

Might be your wastegate vacum actuator(s) ? The DME adjusts the duty cycle at these actuators to control boost and spool up response.

I would go consult with your dealer, since you have this video to show them.