Originally Posted by phunk

Never heard of a stock manifold failure. Im sure it will eventually let go if you keep increasing boost pressure.

Your signature says youre running 800ftlb torque.. that is approaching (if not well-in) the danger-zone for VQ headgaskets. You could be an exception. But if you are looking to stay on the safe side of things, I wouldnt be worried about your intake manifold I would be worried about your headgaskets.