I thnk them solenoids are common. You need to buy yourself a Forscan. Its a diagnosic tester just for fords. I bought mine off ebay for about 8 quid then you go on the Forscan website and download the software.

Its such a simple system to operate. You could log the turbo boost and do a roadtest and watch it on the laptop.

the forscan has helped me out with my diesel donkey mondeo.