RHorseUSMC
Junior Member
After getting my Magnaflow 18" installed yesterday I came home and my Diablesport tuner was here. Following the instructions I updated the software, updated the PCM, created a backup of the PCM, then attempted to load a tune. 99% completed and it gets an error and trys to revert back to original and gets stuck in a loop. Now the truck won't start. Emailed tech support last night (they were already closed) and they had me send them some files. I've been told now they are working on it. Just curious if anyone else had this happen and what was the outcome?