Diablosport Forums

I downloaded the calibration updates for the new 2015 Challenger it downloaded into the vehicle with no problem. I tried a 91 octane tune (saved the original back up) and tune did not finished. Gave me a message that original back will be restored but I attempted to download it back to the car three time and did not finished. Car is a sitting duck. Please let me know what to do.

Did you install the new PCM you received from us first?
Did you confirm the car started and ran with the new pcm in place before attempting to tune the vehicle?

Thanks