Tunerpro Rt Xdf File
Tunerpro Definition Files

TunerPro The software used to make changes to (tune) the binary files J3 Chip The chip used to override the factory calibration with one of your choice, installed on the J3. Tunerpro is a software package designed for the DIY tuner. It does one thing, edits bin files, and it does it very well. It is free, and requires a definition file to work. Well, I have worked very hard to make a definition file that works well with tunerpro, and here it is. It is heavily documented with comments, and all of the parameters are categorized.

I am trying to create a definition file for an ECM that is not on your list. The data stream I am working with is an 8192 baud stream from a Delphi MEFI 4 controller running on a sand rail with a Corvette LS6 engine on it. I was able to see what looked like proper chatter from EFILive V4 using the GM274, GM163, and 95 Pontiac vin K definition files, but the charts and graphs had meaningless data in them. The other definition files did not seem to allow any useful chatter to be seen.
I logged some data with Carbytes V2 using the Holden_VS_V8.ald definition file (the Lotus_Carlton one did not seem to provide any data). The first part of the log file from Carbytes V2 looks like this:
15:40:08.804,66,98,0,0,0,0,90,128,0,0,118,0,135,7, 16,110
15:40:09.204,66,98,0,0,0,0,90,128,0,0,118,0,136,7, 16,109
15:40:09.214,240,86,244,198
15:40:09.224,66,98,0,0,0,0,90,128,0,0,118,1,137,7, 16,107
15:40:09.234,66,98,0,0,0,0,90,128,0,0,118,255,138, 7,16,108
15:40:09.274,240,86,244,198
15:40:09.314,66,98,0,0,0,0,90,128,0,0,118,0,133,7, 16,112
15:40:09.424,
15:40:09.434,66,98,0,0,0,0,90,128,0,0,118,167,134, 7,16,200
15:40:09.525,240,86,244,198
15:40:09.565,66,98,0,0,0,0,90,128,0,0,118,0,135,7, 16,110
15:40:09.675,
15:40:09.695,66,98,0,0,0,0,90,128,0,0,118,0,136,7, 16,109
15:40:09.775,240,86,244,198
15:40:09.815,66,98,0,0,0,0,90,128,0,0,118,1,137,7, 16,107
15:40:09.935,
15:40:09.945,66,98,0,0,0,0,90,128,0,0,118,255,138, 7,16,108
15:40:10.035,240,86,244,198
15:40:10.075,66,98,0,0,0,0,90,128,0,0,118,0,133,7, 16,112
15:40:10.186,
15:40:10.196,66,98,0,0,0,0,90,128,0,0,118,167,134, 7,16,200
15:40:10.286,240,86,244,198
15:40:10.326,66,98,0,0,0,0,90,128,0,0,118,0,135,7, 16,110
15:40:10.446,
15:40:10.456,66,98,0,0,0,0,90,128,0,0,118,0,136,7, 16,109
15:40:10.536,240,86,244,198
15:40:10.576,66,98,0,0,0,0,90,128,0,0,118,1,137,7, 16,107
15:40:10.696,
I am really at a lose here as to what to do to properly log data from this MEFI ECM. I'd like to be able to program it also. I've read various stuff on disassembling the binary and trying to create a hack file to create a definition from it, but this sounds like a long process.
How do I go about creating a definition file for this MEFI ECM?
How do I properly dump the bin from this ECM?
Thanks much!

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7Resources

To read your car's stock file from the ECU you can use Tony's free NefMoto ECU Flashing Software. It is the easiest and best supported method. You will need a cheap flashing cable.

If you already have an aftermarket tune from a commercial tuner, it is likley that they will have disabled the ability to read using this method.

In this case or if something goes wrong and you can no longer connect using NefMoto, you will need to have a Galletto 1260 Flashing Cable to hopefully rescue the ECU in boot mode (a lower level protocol).

To change your ECU tune will require map editing software. Tunerpro is a free map editor. WinOLS is a more expensive map editor. Most non-professionals use TunerPro.

TunerPro will need a definition file (.XDF) for the ECU file you want to edit. This tells TunerPro where the various maps and relevant data are in the file. There are several XDFs posted in the Nefmoto Definition File subforum. Many are works in progress; if you find an error please let the author know.

You will need knowledge of which maps perform what tasks and what data should be changed. Read the S4Wiki.org tuning guide and the Nefmoto tuning subforum.

Your ECU file has several internal checksums that need to be updated when the file is altered. If these checksums are incorrect the car will not start. Or worse, it may start once or twice and catch the invalid checksum and leave you stranded. A lot of guys carry around a spare known working ECU as insurance.

More info about checksums: Andy Whittaker's site.

MTX-electronics sells an affordable TunerPro plugin that will correct checksums for ME7.

Writing/flashing your tuned file back to the ECU is the same as the reading process above. Again, use the NefMoto ECU Flashing Software.

Keep close track of how your car is performing after each tune revision. Download blackberry link for mac os x 10.6 8.

Vag-Com to check LTFTs (long term fuel trims) and other things.
APR's ECUx. Not really supported anymore.
Setzi's ME7Logger - The fastest and most flexible to date.
NefMoto (as of 1.9.0.0) has logging support.

The open source VW/Audi ECU community is evolving nicely. Please help give back by providing your feedback and helping others.

Tunerpro Rt Xdf File

Tuning

The S4Wiki.org tuning guide is an incredible ME7 resource put together mostly by nyet. Check out the other articles on the site.

ME7 Documentation

Funktionsrahmen - Bosch ME7 documentation

Books

Tunerpro Definition Files

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