So by logging MAF values in g/sec and volt, I can verify if the MAF is properly scaled?
No, you'll see the Volt vs map curve post any other corrections, scaling is another story. I use the Voltage to check for a bad maf normally
e.g You could say at 4.5v 200 g/s in the map when the flow bench say's 185 g/s, this would not show up in the logs, but should show in your fuelling