wow!!!! you made that sound like its a really bad problem!! lol my partner has had a look with his mechanic and they are reckoning that the actuator is knackered, its an aftermarket one because it only has one boost pipe to the actuator itself and the other is blanked off!! he nearly figured it out, even though the SR20DET is his speciality haha!!! he going to take the actuator off sometime at the beggining of the week and see if its KO'd or not!! and turn the boost down ..... again!!! i just want to make sure she is all ok before i start to tune her up a bit more!!!