VetPet, do an experiment: get all your stuff working flawless in SD, and then reenable your MAF with stock calibration. then come back and tell me how well this pinnacle of GM engineering working for you
if you want more verification, calculate it with my method from DynAir (histogram or my old spreadsheet), or the old HumpinSS' method by AFR% that was stolen, 'scuse me, popularized, by SoundEngineer.
I bet you you're gonna come with two pretty similar results, and they're not gonna be too close to the stock config.
remember that airflow is one of the hardest things to measure, very finicky and a permanently moving target, and this is the best we've come up with to deal with it, and it doesn't look bad. it doesn't reflect on the performance of the car, it just says what's the frequency of electric blips it takes to keep the heated element in the MAF at steady temp. it's very arbitrary, so i feel zero guilt about mucking with it, as long as i do it in well educated, repeatable, and verifiable manner.
try it, it doesn't hurt, and you can always go back if you don't like it.