Originally Posted by pronstar
IMHO your tuck won't run if your computer is toasted.
+1.
Originally Posted by lightningR6
...took it to the ford dealer who advised my PCM (computer) is bad, they want to install a new one
That's because with your custom tune overlay on the OEM program in the PCM, their diagnostic computer reads your PCM as having corrupted files.
You have to remove your custom tune and restore your original in order for their computer to properly read your PCM. Unless they have zero experience with custom tuned vehicles (very doubtful), I'm sure the dealership already knows this too, and are just trying have you part with your hard-earned cash. Not all dealerships are like this, but there are plenty that are just as unscrupulous on the service end, as they are on the selling end.
What are your "minor mods"? What have you done to the truck?
Stewart