So I have a bit of a problem with my step daughters 1995 Z28. It's 24x converted LT1 with a P01 PCM and 6125 OS that runs really rich. It has no MAF so I've set it up as SD and when trying to dial in the VE, I get reasonable correction numbers but once they are applied, the tune dives back to 10-12:1 everywhere. Anyone have any tips for what to look for? I think I'm in over my head!