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Old 01-21-2013, 08:24 PM
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Yorgi Yorgi is online now
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Location: Toronto
 
Join Date: Mar 2005
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Mein Auto: '04 M3 / '06 650i Cab
I second Herb's suggestions.

I would do the easy things first. Check the fuel pump and replace the fuel filter. Next I would send the injectors out for a proper cleaning and get them flow balanced while you are at it. There are injector cleaning and blueprinting specialists out there that will make the injectors perform better than new.

I don't think bad gas would cause any problems with the throttle body. You may have an issue with the throttle body but that would be a peculiar coincidence.
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'04 M3 - track
'06 650i Cab - daily driver
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