Ok car still has same problem.
Was quite easy to go out for a drive in it but just whenever came to idle it would cut out. Ocasionaly it would idle but then other times it wouldnt.

Tried unplugging that valve and made no difference.
All fuses were there and working.

And all boost/intake hoses seemed to be secure, plus if they were loose surely the car wouldnt rev or idle at all would it? The car holds boost pressure while driving.