Do not screw with the MAF table unless you replaced it with like a 75 to 86 mm or a slight tweak.
Even with the screen removed the change is not that much to play with MAF table for you have no way to know from Hz cell boundries what the real flow is and how GM is comparing that in their O.S.
Also we have ZERO idea if in fact LS1edit is converting the values correctly when it writes to the flash for this table nor is it linear, meaning you add 10% but the results are not 10%.

Use injector flow since it will not have ill effects to timing, line pressure or torque management as screwed up MAF values will.