Update....I GM flash a stock calibration into the ECM using their software. (TIS I suppose) I return the car back to my shop and read the ECM. Instead of them flashing it with the 12649046 OS it was flashed with the newer (I suppose) 12653252 OS. I tried to do some logging and the bug is back!! Commanded AFR Ratio is stuck reading at 0.38:1 while logging. Reflashed the ECM with the "fixed" 12649046 file and AFR reads correctly, however, the misfire tables are still screwy. Surely there's someone or someplace out there that has a good 12649046 cal. for a manual transmission so I can get this thing tuned and out of here. I'm getting behind screwing around with this thing. I don't care whats been done to the file....stock or modified...as long as it's a good one. If I had a way to convert a HPT file I'd be in business as there are 5-6 of those files over there no that site. Id just rather use EFI for all my tuning. If anyone has one please send it my way. Thanks in advance.