This makes no sense you tune maf because you have a LQ4 maf in a non factory installation. Too easy to do. Why you would skew perfectly good injector data makes no sense in this situation not to mention saying the HP tuners software writers don't know what there doing. I'm pretty sure there credentials and experience far. Exceedes daarkhorizon. That being said there's more than one way to get to your goal. If anything try both methods see what works well for you.
If it were me input proper injector data work in maf and ve and go from there