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      05-16-2013, 12:59 AM   #7
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Drives: 2006 M Roadster
Join Date: Mar 2011
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Quote:
Originally Posted by pal View Post
Here is what surprised me, one the writing to ECU began what seems like the fuel pump (whirring noise from passenger side gas tank area) started to run and ran for the entire duration of the flash.
I had the same experience when doing a software upgrade (oem bmw software) before getting my tune, so I imagine it's normal.
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