I just discovered what was causing my problem...

I completly forgot i had a one way valve in the thicker PCV tube that goes to the catch can, in a way that only lets air out of the valve cover, and not in...
My idea was not to let air enter trough the thicker tube to the valve cover and then to manifold trough the a thinner tube and PCV valve, causing a lean idle...

When on vacum right after boost, the vacum generated in the combustion chamber is such, that sucks oil trough the valve seals... and possibly vapours trough the rings from the bottom end...

So now the car stalls due to lean idle but it doesn´t smoke...

So pay attention to your oil breathing system...