I got a 5spd talon with a 4g63t in it. As far as i know it's a stock motor but i was told when i bout it that the guy before him had a different turbo on it before he bought it. That turbo i have but it's physically samller then the stock turbo and is locked up. When the kid i got it from went and looked at it the first time it ran fine and when through the rpms with no problem. He went back to buy it and it had the stock turbo and the guy babied it through the gears. The kid i got it from doesn't know how to drive manual btw. the only mods i can see on it are strut tower bars and two aftermarket gauges, a boost and air/fuel gauge. It need a new valve cover cause it's cracked and two bolts on the exaust manifold. I leaks a little at the mani but no more then a two inch crack in the tailpipe. the rpm problem happens in every gear even neutral. this is my first turbo car, and i'm not a dsm guy i've always drove a honda so i'm out of my element.. I'm going to try to get a vid of it acting up and hope to have that on in a few days..