Well, after looking into it and after trying a few different things on fyfers car, it appears its not boosting atall!
Its completely standard and untampered with, and has about 30k on the clock.
I have a cheap code reader that just does the basics, Told us about the coolant temp sensor and running to lean. Next step was to fit a boost guage and see what its putting out but i have a feeling it will be very low to none. You just dont feel the turbo kick in atall and its not setting off the DV.
Checked all the obvious, its not going into limp mode, its got a brand new DV fitted, we tested it on mine incase it was faulty and it's working fine, No sign of any boost leaks. The N75 also *appears* to be working. When running if you unplug it and plug it back in you hear the solinoid click, i guess that still doesnt rule it out though so might try mine on tonight. Also goin to do the N122 and the N249 By-pass to see if that helps.
Tried taking it a run with the MAF unplugged, made no difference to the car runningwise, but when plugged back in after the run the revs took a slight dip.
Also it has been known for the revs to vary between 750rpm and shoot up to 2000 - 3000rpm and bac down when on idle, Can the TPS play apart in this?.