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      02-14-2013, 01:21 PM   #5
Volasko
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Drives: 2006 E90 330i BSM 6MT ZSP
Join Date: Dec 2010
Location: Toronto

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Do you have a big flat-spot in power around 3000 rpm? Could be your VANOS solenoids, when mine were sticking the engine light would come on and off all the time. I would pull them out, clean them and swap them to see if it makes a difference.