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      03-20-2013, 05:52 AM   #3
pweber84
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Drives: BMW 330d e91
Join Date: Jan 2013
Location: Berlin, Germany / PL, Posen

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I think that is quite dangerous to do it without additional power supply. If voltage will drop down the flashing process will be stopped. It's not worth to take this risk. Every ECU in your car should be flashed using battery charger or second car as a power donor.