Just an update, looked at it today, swapped mass air meter off a mates galaxy,made no difference, thr boost sensor was different so couldn't swap that, looked at the actuator bar/rod and it works well. I noticed it hardly boosts,I squeezed the inter cooler pipes when it was revved up and very little pressure , took intake pipe off turbo,all impellers are mint,no play and spins free as a bird, any one got any ideas, people have said look at timing but it starts instantly and ticks over perfect????????