hi
just a few ideas not just relevant to your specific motor but here goes;
1- previous turbine bearings + or previous faulty engine breathing bad, can both cause oil to fill up cooler +/or exhaust with oil.New motor/turbine does not cure all. <_<
2- exhaust baffles then ommit smoke when starts to heat up.
in some cases it just does not clear +can literaly fill the road with smoke
h34r: .Only twice in last few yrs ive had to change exhausts to cure.
3- removal of intercooler +tip over will show if soaked in oil.If it is it will need flushed/replaced.
4- blocked /poor breathing can make oil in sump pressurize going all different routes it would not normally .
5- if its one cyl or so with a head prob then usualy itl show up with the plug fouling clearly with oil.ie intake valve throwing oil into intake enough to cause smoke must surely show at the plug <_<