OK well after I puffed a few clouds of smoke (nothing major.. but should not have happened)
im going to make up some oil restrictor bolts for these turbos. The theory is that these turbos are over oiled (ie too much oil pressure) and have issue getting the oil out into the sump, when at idle, die to a slight positive pressure in the crank. This forces the oil past the seals, and bingo, white smoke.. yes its white, not blue.. im not sure why, but ive seen an oil cooled turbo do the same thing.
So this bolt simply restricts a little more flow than the mazda bolt, which is apparently way too large of an orifice.
Oil restrictor bolt install - Mazdaspeed Forums
there is a how to.
If anyone who doesn't have access to a drill press, would like one, I can knock you one up. Its piece of mind just to hold onto one, just in case. 20 bucks should cover it.
Anyway Ill keep yous updated.
Doc