We copied a tune for one of our camaros, and put it in, and the car starts up, idles great, then after a few seconds dies just like if we turned the key off. Then when that happens, it will not restart at all. The tune has to be put back into the car, and the same thing happens again. It's an 01 pcm, it has been tuned before, and I don't have a clue where to even start looking on this, as I am completely new to tuning.