well i think it was the intercooler, lol did what people said started at the top pipe from the intercooler to engine and it ran well got full revs no smoke..

thats good. then the turbo, that was suck in and blow-in fine

even better. so it must be the intercooler

so got one for £10 put it on all was good, put air box back in with new filter so did the oil and rad, all flushed. runs well now no smoke loads of power