it can be a clutch wat creates over boosting(proven)a crap clutch can do the same
.boost solenoids effect the boost bypassing it can raise boost. i can raise .3 of a bar just bypassing my solenoid how do we know some1 hasnt done this to his car.i agree on a adjustable actuator but y pay out on 80-90 pound ,wen you can set it to low boost put a 20 pound boost controller on and get the same effect .if he plans to go to a bigger turbo in 3 month time then it was worthless buying and actuator for that price i cud say go get a fcon and sort it that way it all about how much money you have and what you have to spend personally if i have just spent coin on a new car i dnt wanna be going out spending more wen the actuator may not be the problem .