FINALLY like I said, boost leak gone and the CEL for the "bank 1/2 rich" went away also (due to no unmetered air getting in under vacuum, certainly). I still can't get an answer on how much boost I SHOULD be seeing from my tuner, but the highest I'll see occasionally is 16psi. I want to say the factory is somewhere around 12? I can't wait to get WMI installed and tune for more...