Engine-->fuel-->open/closed loop-->ECT vs. startup ET, max those out. Same for O2 readiness ECT. Then it sounds like you've already maxed out the LTFT enable temp ones. You can also force it into open loop in scanner, BUT you need to disable and reset fuel trims after you do that so it won't use whatever it's learned. I always log fuel trims anyways just to make sure they are zero while in open loop.
Attached is a quick sheet I made. I'm not even sure what VE data is in there now so don't use it or anything.. cells that are white are ones you need to fill in or change or whatever
Ones in grey are either formulas or axis labels, etc., so you shouldn't need to mess with those
I'm assuming the the x/y break points are the same for yours as they are for mine. If not, you can change the RPM/MAP #'s at the top (starting point VE table) and it will change the next two tables for you
VE Calculator.xlsx