GMPX,
I can clearly read you are the Admin of this site and I'm not sure if the goal is to look tough on this subject by attacking my lack of consideration. I started my paragraph by saying, "I understand this is a daunting task to accomplish, but how does it ever get done?". I would assume that would imply in just that instant alone I took the time to ponder how much work it would be. I thought about the scope of demanufacturing structured code written by someone else, who intends to not help you, and your only clues are likely the microcontroller processor calls themselves published by the processor manufacturer. You would look though seas of data looking for structured patterns based on the patterns in which they appear in other decompiled code. Then you would attempt to test that and see if you have hit paydirt. I also can appreciate considerable work goes into this to support the multitude of vehicles you offer BIN files to tune since you would have to do this process for each new processor you add to your list of supported models.

I made all those realizations based on the fact I am a programmer myself. Endless hours a week all over the world building research equipment. While we do nothing similar I am pretty sure I have a far deeper appreciation that most could. I am in no way trying to devalue your efforts by saying if my code stops lives are at risk. Its allot of work with relentless testing. We all have had 4am nights trying to figure out why a bit flips state and it shouldn't causing some sort of havoc. All I wanted to know is if there is a log of known information. DFE1 could be totally wrong, but maybe he is totally right. Only way I can find out is if I test his opinion, but maybe someone already did. Maybe those efforts are someplace and I don't know.. On that note I think my question is valid. Its a mountain of work but who keeps track?

Philip