V3 launch was working good with older versions, but I guess a new change in firmware makes it not work properly. Could it be that target boost is actually absolute and not gauge, a glitch? When trying launch control and active, despite 100% DBW and TPS, RPM falls off and doesn’t really hold at target. What’s the issue here?
I think -30deg of ignition advance reduce torque too much. In previous version ignition angle could be controlled by PID. Now it is simplified and RPM control is done by rev limiter strategy. Try to set ignition angle to 0 or -5 deg and then check.