No not if you do small changes and then via scanner seeing if fuel trims go leaner or richer.
Try adding 10% to stock values and then another test taking out 10% from the stock values.
See where your car normally is as to voltage so if it runs mostly around 13.5 volts then change the rows in that area.

Once you have the values right for the makeup of your car then you can adjust the whole table to fit your engine's need.