thanks for the reply i will try it tommorrow i dont think there is any exhaust restriction as i have a 3 inch ss pipe but the old turbo used to boost fine up to 15psi but it smoked the street out will try taking air filter off and conecting turbo to actuator direct there isnt a chance that the inlet pipe from the injection system is closing up they have power eng pipes on . the actuator on the new turbo was already set to standard but it had no pre load to get 3-4mm pre load i had to screw the rod in all the way. anyway will try the things you listed tommorrow rob