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Old 05-07-2015, 03:14 AM
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Default e46 Touring M3 Conversion, DSC Coding issue

Hello all!

New here, but could really use help with my fun project

Ive nearly finished converting my 2003 325iT into an M3, using a coupe donor of the same year.

Its a running vehicle at this point but my DSC light is illuminated due to VIN mismatch.

I have tried coding the DSC using ISTA/P and an I-COM but it fails.
I have tried coding the DSC using NCS 4.0.1 and following an online step by step, also fails.

For background, i used the complete wiring harness from the M3, and added in the rear door and hatch wiring from the touring. DME/EWS/SMG/Kombi etc is all from the m3. DSC and the GM5 are original from the touring.

My main question/concern is, am i going to be able to code the touring DSC correctly or do i need to swap in the one from the M3? (Pain considering the engine compartment is all reassembled now)...

Any help is greatly appreciated!


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Old 05-07-2015, 08:41 AM
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I think you need a MK100 DSC ECU from E46 M3, all non M E46 had a different ECU.
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Old 05-07-2015, 01:27 PM
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Quote:
Originally Posted by maxxel88 View Post
I think you need a MK100 DSC ECU from E46 M3, all non M E46 had a different ECU.


You're absolutely right. :( The M3 has a different part number for the DSC unit.

i still have my donor M3 and its DSC, i just didn't want to backtrack and have to pull everything apart again.

Let it be known! converting an e46 into an M3? you need the M DSC!

Thanks!
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