I have a Diablosport Predator, but cannot use it because I have an existing tune in the computer. I know I need a reflash from Ford before I can use it. So, my question is, will Ford reflash my computer without any hassle? I may have a timing problem anyway. The person who did my current tune might have skipped over a few parameters that needed to be adjusted. That is why I want to tune it my self and get it right.