I have been dealing with a faulty internal wastegate actuator on my greddy kit since last March when I had the car tuned. I did a ghetto remedy of using a spring to maintain tension on the actuator. I really want to replace this unit. I have heard there is an upgraded version of this out there for the tdo4-15g turbo but have had no such luck finding that. Does anyone know of a place where I can find something like this? www.atpturbo.com has replacement actuators, but I am not sure if anything from there would happen to work on my set up. Any help would be appreciated on this, I really would like this to work properly.