I guarantee his motor blew because of tune. Mine did. My knock sensor kept kicking in and Chris kept revising the tune. When my motor blew, it didn't even make it a block from my house after loading a revised tune. I have all sorts of data logs and can post when i get home, where it shows the car trying to compensate like crazy. This guy isn't the only one to have a blown motor from there shop lately. I can count at least 4 in the last 2 months.