The ZO6 8L90 TCM calibration has significantly faster downshifts, over .2 seconds faster in some high torque areas compared to the SS 8L90. I tried to use these shift times in my camaro and it starts to tie up the shifts, particularly downshifting into second you can feel it almost double shift and it will kick TC/stabilitrac on. I am thinking since we don't have access to the preset pressures, maybe the ZO6 8L90 has more preset value on an offcoming clutch, but after driving awhile it keeps on tieing up and will not learn around it. So does anyone know if there something physically different between the camaro and corvette 8L90?