Was hoping someone here may be able to give some guidance or help with attempting to Flash or work with a 2016 Hellcat that has already had the PCM unlocked by what appears to be Diablo.
I knew this day would eventually come as myself and my shop have started to get into tuning and working with the late model Hemi's,, including the Hellcats. Only a matter of time till we were tasked with trying to tune, or re-tune one thats been unlocked by someone other than HP-tuners.
I was able to successfully read out the PCM and the TCM from this car,, it is currently flashed with someone else's stuff (Diablo). It's been brought to me to hopefully refine the motor tuning, primarily Raise the limiter, and above all re-work the TCM as I've done with about a half dozen Hellcats with no trouble since HP unlocked the TCM on them a few weeks ago.
I've licensed this car for the required 6 credits,, so as you'd guess, I'm sorta committed now, and somewhat invested in the car.
As a test; I simply attempted to flash back in the exact read-out that came from it (PCM & TCM) to see if this would work,,, and it did not work at all. I also attempted to flash only the TCM, and not write to the PCM, and to my surprise, that didn't work either.
I thought for sure that we could at minimum write to the TCM regardless of that was going on with the PCM on these? And I thought people had been able to flash just the TCM part, but not the case with this one, I can't write to anything on it. Could the other flash be locked somehow?
We are prepared to send the current PCM to have HP-tuners unlock it instead, but I'm not understanding why we could not write to the TCM regardless of the state of the PCM?
Any help from this community would be greatly appreciated. I did not flash it back to stock, didn't know the outcome of that, so I simply read it out and attempted to flash it back in with HP after licensing it.
Thanks guys