I'm trying to go to the custom boosted OS system in my 01 Z06 vette. I followed the tutorial and used custom OS 01250003 (my original was 12202088 ). I uploaded the OS, then uploaded my former calibrations, and then changed the items needed per the tutorial. I should note that I am using Road Runner. Now I have no PCM communications when I check the DTC display. And I get a bunch of other codes that go along with that (U1000's). Have I done something wrong? I'm now at a loss.
Thanks,
Derrick