TunerPro User Forum

If you guys need a definition file for any of the OBD1 cars hit me up on AIM. KOOTER1969

I can also write a definition file most any other motronic car as well.

Here is the crazy VW audi checksum circus.

http://www.andywhittaker.com/Audi/ecu/index.html

There is about 15 different sections that are added togher and checksumed.Then a constant is subtracted from the checksum to form another checksom in another location. The new stuff has a really crazy checksum routine where there are many checksums like this and then there are XOR checksums as well(...

I have been using the RT on some VW bins.Some of the later ECUs have hugly complicated multiple checksums.I would be tickled to death to see this feature so I don't have to use a hex editor.