ummm i think a good boost level is about 22psi for a VF34 which is about 1.5bar. LIke everything, the harder you push it the less its life expectency is. Not only that, you are still running (not sure about deck, open like a GC8?) a 2ltr EJ205 therefore pushing it too far beyond 200kw will most likley see a big end bearing going eventually.
If it is open deck, would the bores be more inclined to warp as they are less secure then the EJ207/EJ257? <- Question for the tech heads