ya..... you better go back and read that Mustang warranty again.
it's a warranty offered by Rousch. . Or more likely a warranty that Rousch buys from a third party.
i am confident of two things. First, that there are lots of weasel words. Second, that it is way more of a pain than dealing with a traditional Ford warranty.
Don't want to bum anyone out. i think the risk of mild engine mods gas or diesel is pretty low. But it is definitely a low incidence, high risk kind of affair. Meaning iits not likely to go bad, i but if it does it's going to be really expensive.