Guys, tried this today and not sure how successful it was, had already removed my egr valve and cleaned that earlier this year so thought I would try this as well....
Bought 1metre of 3mm tubing off e-bay and fed it into the whole, about half of it went in...
One can of Mr Muscle, with the nozzle replaced by one off of a can of WD40 with the pipe attachment...
Put nozzle from can of Mr Muscle into end of tube, pressed down and had 90% of foam come straight back out the top of the tubing....
Removed tubing and tested to make sure it was going all the way through, it was, but not in huge volumes, most of the Mr Muscle was coming back out the top.....
Perservered and put tube back in, ended up using about half a tin of Mr Muscle, didn't notice at any point it foaming out of exhaust manifold so completely unsure as to whether any actually reached the turbo, left it for 2 hours and then went for a drive, got a dump of soot on the road surface at start up, no clouds of the stuff as widely reported, haven't noticed a huge difference in performance....
Have I actually done this right? should I use larger diameter tubing to actually get the stuff into the turbo area?
Cheers for any help in advance....