Right so I have bought a new vacuum solenoid and went to fit it.
Managed to get it off (only one nut holding it on so someone has been there before). Got it so I could see it and there was only one pipe on it. The pipe from the turbo actuator was on the joint that is labelled 'vac'.
The one labelled 'out' there was nothing. After reaching down into the void and lifting thick wads of cables I found the other pipe, albeit with no vacuum piping on it.
I put the one from the turbo actuator back on the 'vac' and the other I fitted some vacuum pipe and put it on the 'out' side.
Put everything back together and went out and it does have more power and torque but after getting the missus to have a look at the actuator whilst I revved it she said that nothing was moving.
So although I do have some extra oomph are the pipes on the wrong way around?