466hp, 13 psi, 10:1 c/r, that is very impressive for an engine that was not originally engineered for forced induction. Given PSI's previous work, I am confident this motor will make much more power once the new internal components are installed. I remember when the first S2000 we did at SpeedCraft back in 2001 broke 350hp on 10lbs of boost on a stock motor. We were the first ones in the country to make that much power. We felt like it was a huge accomplishment. It takes some skill to tune. This X is currently the most powerful in the USA, (unless someone else has some turbo monster and hasn't shared). Besides, how many people honestly need and know how to properly apply more than 500hp on the street?