Going from a stock Gen1 injector to an S2000 or lets say any other injector for the sake of the argument. From what I'm understanding is

Stock injector flow rate is ~270cc
S2000 injector flow rate is ~380cc
(both sets of numbers are just for argument's sake)

380/270 = ~1.41

So under "Advanced Settings" in the ECU editor, in the "Fuel Pressure/injector size compensation" drop down box, I would select the 140 selection, flash the ECU while keeping all my other data the same, then datalog my motor passes to fine tune the fuel map to get back to my targeted A/F after the injector swap.  The 140 adjustment should keep me "close" though

Am I understanding this correctly?