Being a GM engineer / Dealer trainer for over 20 years, I understand the platforms, devices, etc What I need help with is how some of the HP Tuner nomenclature applies to the 4T45E in the Chevy Cobalt. Specifically Normal, vs pattern A and Pattern B. Then Normal vs D2 vs D1. Lastly, does the Cobalt 4T45E only use pattern X? I like to read and don't mind trying different settings but until I know exactly what applies to the Cobalt 4T45E I am going through more fuel than I care to .
Thank you