Originally Posted by Jaxx
not to pee in your coolaid but
"I am going to run the GM ECU and interface it to the CAN BUS Legacy cluster."
thats going to be tough
I'm not so sure. The CANBUS interface is an industry standard, so the communication should 'just work' with a bit of research. After that you need the commands to do as intended.
A person with the right skill set can sniff the CANBUS of both to figure out what each command does for each brand. Then said skilled person can build a 'translator' that accepts the GM ECU commands and repeats out the Subaru translation for the cars systems.
It's far beyond my skillset, but the type of guys that can reverse engineer complete ECUs should have a head start. The question is....does the builder have the know-how or the connections?