REALLY?? They're that smart? Gee, FORD better hire them to do their programming then!
I am fairly certain, that there will be ways for Ford to tell, I'd imagine they can see a history of parameters for the different systems, volume of fuel demanded, etc... isn't it fair to expect that there's no way to "Hide" this? IF they can truly do this,, then they better offer a warranty of their own.... will they take care of any damage done to the motor/drive train if it fails with their tunes and Ford denies a warranty claim?
IF they will put that in writing, then I'd say go for it,,, if they won't... then expect to "Pay to Play" as they always say on here!
NO DIS to those guys, I'm sure their tunes are great,,, but to pretty much GUARANTEE the history of tunes is hidden from the dealer? Heck, even the OLD SCMT 60/80 HP programmers from the 7.3L left a little bit of a trail, they told the dealer everytime the power was removed from the PCM,, which gave the dealer an idea you had programmed it.
With the level of electronics on these trucks compared to my early 99,,,, I wouldn't expect the dealer to not have a clue, or even a suspicion it was tuned... sorry. Like I said, the SCMT from back then "Uploaded your stock PCM programming, and downloaded a tune" that was how they got by with you NOT programming more than one truck at a time,, even then dealers were trying to deny warranty claims I am sure, because you "Tuned" your truck,, YES there is the Magnasson Moss act,, and if you have enough money to fight FORD,, then go for it.....