Ya, the Duramax's these day can make some serious power.... My brother was looking at upgrading the turbo a boost, through the edge, and he had been talking to some people, and they said not to, because you blow the heads off. Pop them off like your opening a beer can.. I guess the studs that are in the heads right now aren't strong enough to take more than i think he said 45lbs of boost from the turbo. Crays! But fun as hell, and you got to love the suit