Hello,

I've found that my P59 DTC's and other aspects of editing the 7603 P59 BIN are generally good. Are you sure you have all of the correct checksum DLL files installed in Tuner Pro, if that is what you are using? Maybe try a different XDF.

Making an XDF? There are discussions around about how its done. If adding features to an existing XDF, first hope that it is not password protected. There is also a lot of angst if you edit an open and existing XDF without giving credit to or asking permission from the person who started that XDF. That person put in a ton of work.

Starting from scratch to build an all new XDF is going to require you to know how to use reverse engineering tools such as "Ghidra" or "IDA Pro" to disassemble the compiled code. Both of those names are Google-able and none of that knowledge is easy to come by. I certainly and absolutely DON'T HAVE THOSE SKILLS!!

I know my limitations.

Rick