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      09-27-2010, 11:31 AM   #1
MNm3
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ECU/DME Removal for tune?

Anyone have a DIY for removing the ECU in order to have it shipped for tuning?

I'm getting the ESS tune done and haven't ever removed the ecu before on my car.
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      09-27-2010, 03:02 PM   #2
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Is it in the same location as a regular 3 series? If so, then I assume I can use the DIY from the E9x 3 series site...
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      09-27-2010, 06:36 PM   #3
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Ilia just sent DIY over by email
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      09-27-2010, 09:53 PM   #4
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The M3 DME is in the same location as a Non M series. It is in the same box as well.

The cowel cover is a bit different, but it is easier to remove as it doesnt have any wire loom or battery cables running across it and nothing is clipped into it besides a small sensors that just twists out.

It's much easier.. Let me know if you need pictures.
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      09-28-2010, 11:14 AM   #5
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Thanks IND for the DIY! Very helpful.

I was wondering if you have to disconnect the battery before removing the DME? I did just to be safe, but the DIY did not mention it.
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      09-28-2010, 11:43 AM   #6
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Quote:
Originally Posted by MNm3 View Post
Thanks IND for the DIY! Very helpful.

I was wondering if you have to disconnect the battery before removing the DME? I did just to be safe, but the DIY did not mention it.
i think it's recommended to disconnect the battery when doing anything electrical
more so the ECU
last thing you need is to touch 2 wires and fry your ECU
going from 414hp to 0 ain't nice
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      09-28-2010, 12:31 PM   #7
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Quote:
Originally Posted by kmarei View Post
last thing you need is to touch 2 wires and fry your ECU
Indeed. And I'd go a step further and press the brake pedal after disconnecting the battery, to discharge any capacitors in there (if any). Just an extra precaution.
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