Ok finally did some work got the trans cooler in (davies craig with a fan in front of right wheel, works perfectly and the auto feels like its new again). Had it and the diff serviced, oil, plugs, everything else, modified airbox etc.
Finally had a good look around the engine bay and through the XCAL and to my surprise its running a 14psi tune and a turbosmart manual boost control on what I think is the standard actuator.
Hmm, must say its tuned very well, only ever heard it ping once on bad fuel. Its been doing 400km a week for quite awhile. So, I've settled on an outlaw hi flow cat converter (heard good things) some new coils and an upgraded fuel pump before the tune.
So what is everyone thoughts on the manual boost control situation? I take it I will need a new actuator for 14,15,16 psi to go back to the boost control solenoid? Are there any benefits staying with the manual control It gets to max boost early.