Being an old skool kinda guy, I'm actually shocked that ANYONE would build a motor, let it be installed by someone else, in a boosted application, with an unknown tune and still even consider warrantying it. I worked in several performance shops over the years (one which ran a pro stock Camaro back in 1970, it's been THAT long) and there was no way we would consider warrantying anything we didn't have a hand in installing because we knew guys were going to ream the living shiot out of it. I think the fact that MMR is even willing to work with this guy, even after the bashing, speaks well for their company. I would NEVER e-thug some company, then ask for them to honor a questionable warranty issue...oh well, like I said, I'm "old skool". FWIW