Have orig computer and newer and both are licensed and unlocked for exact same car a 2008 chev Corvette. Ls3. The new one I had switched over for a single turbo, recently to Os 2 bar and 1st initial drivability tuning had developed a tendency to not start and then completely stopped running. I'm pretty sure it wasn't the tune because it was doing it a couple times b4, and I was also getting weird numbers when it would not start. So I plugged in my original and the car starts. The question I have is when I went to write in the os2 program file from my list it said the operating system is different. Does that mean I need to have the 2 bar os file downloaded then I could do the write of the tune file??