ahh cool thanks guys, yeah im not too worried about the 10psi boost, its not going to hurt anything as its still quite low and its probally as far as im willing to have it boosting to anyway to avoid any problems being caused. i'll clean the iac and give it a throttle body clean to try and sort out the hunting and may even run a injector cleaner to see if that will clear anything up aswell, as i dont know the service history of the car. As for a running mildy rich, what sort of things may i be looking at that could/will cause the engine to do so (im aware that the extra boost with no extra management may cause the ecu to dump fuel to counter the extra air being forced in) but if anyone knows of any other known causes of rich running then dont hessitate to list them down. as ive said earlier the car doesnt blow smoke at all, its just got a strong exhaust smell.