If it were me I would get rid of the co2 for now (turn it off) and get the car to run consistently on the gates with a nice flat boost curve. Then start throwing co2 at it and tune for more boost.
Im going to be doing a shop air test on it today. Was told my pid settings are off and I need to dial them in. That's what was causing the overshoot and oscillation. So im going to do that today and change the plugs.
Good part about pid settings is I can hookup compressor air and test those without running the car and beating on it. Once inhave them dialed in then ill proceed.