kay well basically i think he runs at 14 psi he has about 4000 dollars on the engine in mods but he baught it that way, and i'm not sure what's on it, it works perfectly fine after it's been running a while, and warms up. and it's like a chug that doesn't stop unless he lets off the gas, like the car jurks hard over and over again every half a second, like CHUG CHUG CHUG CHUG... wow yeah i'm good at making car noises *rolls eyes*, yeah he says it's fuel cut but then again my friend hasn't done any of his own modingyet, and he claims to have taking apart and put together his engine , so i don't know if he even has any idea what he's doing, but yeah i think like a leak or air flow problem would be most likely, i'm just curious if it's a common problem and if it's pricey to fix, i'm in canada, so it might cost me more when i get my supra in september, anyways, the feed backs awesome, thanx