The battery voltage offset tables are provided by the manufacturer, they must be entered if you change injectors, otherwise your injector pulse width will be off at voltages. You may have to use some math, I use SCT advantage 3 for my mopar, it allows me to change the voltage side of the table also. Then you change flow rate based on the increase over stock. After that use your fuel tables to increase or decrease pulse width. Tune in open loop to get it close first, make sure you reset memory in your computer first or it will apply learned short and long term trims even though it’s open loop, start fresh. After getting trims close, turn on closed loop to see how close you are, + or - 5 is acceptable. I was able to get mine at 0 through a lot of the table. Make sure your adaptive learning isn’t applied near WOT, check your WOT map and limit it 5% below minimum. That has worked best for me, don’t want fuel corrections near WOT, you want to only use your tune for this.