Took my truck in to a local dealer for some warranty work and they called to say they can't read the PCM. Asking me if I've modified it ... not yet 
I bought the truck around a year ago from a different Ford dealer, and so whilst it's possible the previous owner ran a custom tune it didn't come with a tuner.
Is it possible (or even worth it) to use something like Forscan find whether the truck is running a tune?
Is it also true that they can't reflash the PCM back to stock (at least without having both keys), which they claimed?
I bought the truck around a year ago from a different Ford dealer, and so whilst it's possible the previous owner ran a custom tune it didn't come with a tuner.
Is it possible (or even worth it) to use something like Forscan find whether the truck is running a tune?
Is it also true that they can't reflash the PCM back to stock (at least without having both keys), which they claimed?
