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Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 09-22-2019, 05:55 PM   #1
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Join Date: Aug 2019
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i fried my dme now what??

Hello fellow e46 owners,
so i was trying to flash a new file onto my e46 325i and halfway through it said wron echo bytes. i was using jm and now the car has no life whatsoever. i got two now dmes and tranny dmes today from junkyard. but when i put one set in to try to put the ews delete file on it shows no life when i turn the key. can anyone help me with this? is there something else i need to replace as well. would greatly appreciate any help. ive been fighting this car for awhile now and idk if i have much fight in me left with the car.
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Old 09-28-2019, 12:16 PM   #2
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My Ride: 2002 330i
if spare DMEs are having the same problem then it may be do to some other problem. This is why DME flashing is not for everyone
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Old 09-28-2019, 02:16 PM   #3
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My Ride: 01' 525i Manual
Yea sounds like youre not flashing correctly. Make sure car has 12-14v when flashing, you should have it on a charger or tender while you flash.

Also echo bytes errors is pretty much a timeout. Sounds like theres something not configured right on the com port in device manager
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Old 09-28-2019, 02:56 PM   #4
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Join Date: Oct 2011
Location: Greece
Posts: 390
My Ride: 2001 530i
your DME is not fried.
there's something wrong with flashing procedure
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Old 03-21-2020, 04:23 PM   #5
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Join Date: Dec 2017
Location: Baltimore, MD
Posts: 85
My Ride: 2003 325Ci Cabrio
Transmission: ZF 5HP-19
If you're still having problems with this and are using a cheap reader from ebay get a better reader. Had the same problem but then got a reader from bimmer geeks and it works perfectly.
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Old 03-22-2020, 05:41 AM   #6
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Location: Netherlands
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My Ride: 330i
Year: 2002
Transmission: 5-speed manual
try a new/better charged battery, check the com port settings for the cable and try again
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