Hello all, I'm new to hpt and need help. Ok I have a 15 hellcat 900whp and the tranny burnt so had it replaced at dealer they had to flash the pcm to be able to flash the tcm so when I got the car home I flashed my tune to the pcm and it would only let me use option write all but it worked,my problem is the tcm. when I try to flash the tcm it says "write calibration selected for ZF8HP but operating system ID's are different" I paid 4 credits for my tcm tune so I guess I lost them. Anybody know why it wont write. do i need to use the tune dealer put on it and change it then add 4 more credits and flash it back to car? one more thing is it ok to use traction control at the drag strip,even on drag radials its the only way i can get it to hook up. could that have killed the tranny? I live in boise idaho and the car goes 9s. Thank for any imput!