Cool, good to know about the intake not changing it. Did it still smoke as much? When you pull the plugs you want to see if the tip of 1 in particular is caked in soot / gunky oil. Or if all 4 are That amount of smoke indicates oil is getting in in big quantities, and too much to be a valve stem seal IMO. If you pull the hot side intercooler piping and there is no oil in it then it could be something else. A PCV valve being faulty / the wrong way around could be one, so try disconnecting it and plugging up the hole.Does the turbo intake have any pipes going to it from a catch can or crank case breather?