Well not really:
"The garage said there was loads of smoke coming out once they had put the turbo pipes back on..."
I assumed he meant there was loads of smoke after the new turbo was fitted and they'd put the bits back together (residual oil in the inlet tract). Otherwise this doesn't make much sense. What happened before the garage got their hands on it, was it smoking then ?
Anyway, fair enough, I give up. Someone comes on with a HELP ME ! and then provides nothing but cryptic info and ignores given suggestions. I guess there's no helping some people.