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      06-17-2019, 09:05 PM   #1
JacobND
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MHD (N55) only took 11 minutes!

Today I flashed my ECU using MHD for the first time since I owned the car. I do not know what the prior owners did/or didn't do to it.

When the installation began, it showed 0% and 11 minutes remaining. I timed the actual progress and it took just about 11 minutes total. Is this normal since I read that the initial flash usually takes 20-45 minutes?

The flash completed successfully and seems to be working running Stage 1 93OCT.
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      06-18-2019, 10:08 AM   #2
TURBO8
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That's how long mine took, I was a little surprised too.
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      06-18-2019, 11:21 AM   #3
dtla1
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I think they've been making changes to make the coding process more efficient. The 20 minutes was when MHD first came out so I guess 11 minutes is where they are at now.

For re-flashing/changing tunes, it used to take like 2-3 minutes, now it takes 1.
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      06-18-2019, 03:32 PM   #4
MN.BIMMER
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As an apartment dweller, is it still necessary to have it plugged into a trickle charger? My battery has about 1k miles on it.
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      06-19-2019, 11:27 AM   #5
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Quote:
Originally Posted by MN.BIMMER View Post
As an apartment dweller, is it still necessary to have it plugged into a trickle charger? My battery has about 1k miles on it.
I'm sure the official answer will always be yes, because of the "you never know" factor. In reality, I think you'll be ok. I did mine without a charger, lights off of course, radio off, driver's window down so I could start it from outside with the door closed and then just left the tablet on the dash as it went.
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