ok sorry about this guys, i have fixed my overheating but now have a boost prob, it started when tried to road test it, it held back and sounded like a machine gun on boost, almost like overboosting. so i wound the actuator right down, same prob at 5 psi!! so then i found the multi plug to the EMFR i belive? (black box on side of metering head at the rear) hanging, so i plugged it in and it cought spluttered and died! upon further inspection i found 2 wires chopped just infront of the heater box which i was then told was ment to connect to the engine temperature coolant sensor, so i looked and it wasnt there. it was blanked off! i then got one and whacked it in ect and seemed to then idle but still missfire, i thought it was cause of co2 was out, so sorted co2 and still extreemly bad. so then i changed my cam and is MILES better, but still on full load holds back and seems to overboost but nowhere near as bad because i can now sort of build up the revs slow and drive it normal, but still will not go on full load!! any ideas are extreemly appreciated as normal guys