All it takes is a memo from a Ford engineer claiming the aggressive nature the Pedal Commander's throttle response puts undue loads on the engine and transmission that exceeds normal design usage. That's all it takes to get your warranty claim thrown out of court. (you wouldn't have spent $300 on the device if mashing the pedal produced the same effect)
And don't expect the dealer to be on your side. He makes a lot more money if you pay for repairs since Ford gets a heavily discounted shop rate and no markup for parts on warranty jobs.
Monkey with your truck all you want, just don't be surprised if problems arise and Ford denies your warranty claim.
It's probably not wise on your part to assume you have any insight into my relationship with my dealer. I've literally purchased over 50 company trucks from them over the years. They've bent over backwards for me on multiple occasions including doing warranty work on tuned vehicles that even I admit should have been denied. It's really all about who you know and your relationship with them. And by the way. I think personally that the pedal commander is a gimmick therefore I run an actual tune. Id be hard pressed to Pay 300 dollars for anything that didn't show results on a dyno. Anyway, thanks for the input.