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      01-08-2013, 04:22 PM   #7
Mike Benvo
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Drives: Harrop M3 / F10 M5 / F82 M4
Join Date: Apr 2008
Location: SoCal

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2000 BMW M5  [0.00]
1990 BMW 735i Turbo  [0.00]
2008 BMW M3  [3.75]
2015 BMW M3  [0.00]
2015 BMW M5  [0.00]
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Originally Posted by BimmerRob08 View Post
oh interesting. I hope that isn't the case. A while back I asked my BMW rep about updating to the latest software and he mentioned that after the update, they would re-download or re-program with my DINAN tune. But good question to ask so good point. Thanks!

If they are lazy, they can downgrade the software back to whatever they programmed your DINAN tune with.

I've seen some tuners do that, not a fan personally. Always good to be on 190E or above. Back in the day many tuners would revert software back to 'non tunerlock' versions because the car wouldn't start if they tried to tune the later software. But we always had a solution to that and have never downgraded a single car.

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