JAY,

Well doesent make sence if the boost , fuel pressure, all above is correct, does it
idle ok,(if not may have vacuum leak) as plug colour indicates not suitable by
colour range to engine, lean, were these plugs in both setups ,stage 1 and 3,
if the same plugs, and running lean on both chips 1/3. all above good, try
another set of plug's,,,, when you look at the plug is the insulator of the plug
down in the plug or on the outside of the plug, if cold plug or turbo plug the insulator part should be down in the plug, and a hot or N/A engine plug is longer
on view more, is the engine temp normal,, may be worth checking the coolant temp sensor, the one which tells the ecu the engine temp for mixture related info,
blue sensor , at the rear right side of head inlet manifold side. also have you now
since stage 3, have 3,bar map sensor, as its getting the wrong signals somewhere.

DAVE R