I did call you Dave but you must of been elswhere at the time, but anyhoo, i think i have it sorted, the problem was (hopefully) spark plugs !!!!!!!!!!!!! fecking hell, i've been through 3 sets in 2500 miles, basically 2 cylinders were not working, so i swapped the plugs over, then the other 2 werent working but the other 2 were, so im off to get some new plugs and some new boost hose as my hose to turbo and actuator have gone very soft and i value my head gasket !!