how can i tell if my actuator is worn? i can pull the bar right out with 2 fingers. would this explain why my boost peaks at 18psi but falls right off to 8??

 

Very likely, yes.

 

yeah had the smae trouble mate, get your self a nice new -31 orderd up give it about 3 mil pre load and you be sorted.

 

supermanrs you've decided to keep it then!!!!!!
see the car in the sig!!!

 

is that the rs in ure pic then phil??

 

when u say a 3mm preload, does that mean leave it 3mm short of the wastegate flange b4 hooking it on??

 

yes mate that is the very car you talk of.

 

sounds like the actuator to me. When fitting a new one screw the rod till its hole looks like a half moon over the wastegate pin then pull the rod over the pin, this usually sets it up fine. Would reccomend a good tune tho