Your Engine/Airflow/Speed Density/VE Coefficients tables do not match. All of my numbers match from column top to bottom on the manifold switches. I see some crazy numbers in some of the cells. You might look at your stock tune and compare how they match. Maybe this will help. Under Edit VVE table. My first three tables match and very little change in the last table. I did see your Overspeed limit minimum is 2.0 g, mine is 0.5 g. I haven't over-boosted mine, so I don't know what this number means or if it applies. Could you explain this to me? I have the 2.0 LTG turbo in my 2013 Malibu. My engine is transverse fwd vs. yours being longitudinal rwd. I found this write-up that explains a lot. Here's the link.
https://www.hptuners.com/help/vcm_editor_tuning_how_to_advanced_e78.htm
It basically states if nothing is limiting boost, the throttle will stay open 100% at WOT.