I installed the Diablo 91 octane tune on my '07 C6. The car seemed to run more responsive and shifting seemed to be better but the car idled a bit rough, almost as if it had a miss. Is this normal? The car is completely stock. Runs great when switched back to stock.

The software version on my tuner is 8R10. Does it need to be upgraded?

Thanks,

Dennis

I would contact Diablo. They should be able to help.