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      04-08-2018, 10:51 PM   #76
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Drives: 2018 340i xDrive
Join Date: Sep 2015
Location: Halifax NS, Canada

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Quote:
Originally Posted by Kailec View Post
For those of you who have used the flash tuning method, has anyone actually plugged in a charger to do it? I don't have one and was wondering if it was necessary.
No, it doesn't flash long enough to use a battery charger (this isn't MHD with their 20 minute unlocks and 4 minute flashes. ) BM3 takes 4 minutes to unlock and around 50 seconds to flash your maps. If you want to be very safe (something like winter where the cold kills the battery faster) you can attach a charger to it but I never used one as the flashes are so quick.
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