Of course it's his truck and he can do whatever he wants. It's just a pretty wild ride that is very counter to how the tune/dealership interaction is usually perceived here. I'd say 90% of people are convinced that a dealer being aware of a tune immediately makes warranty work painful--and this case shows that is definitely not always true.Because it’s his truck, he can do what ever he wants. Does not mean it wont come back to get him later, so the rules still apply (gotta o pay to play) Be ready to pay for it if they cover it all the better. I have had great luck with dealers “working with you”, find one that is helpful and stick with them.