MAF scaling on MK5 GTI

I'm ready to start calibrating my MAF but I want to set the correct scale first. I've worked out I need to scale my intake up by 1.04 using the following info (I manually measured both intakes as best I could)

Old intake around MAF sensor 2x3 inch oval

pi * 1 * 1.5 = 4.71 in^2 = 3039 mm^2

New intake around MAF sensor 2.5 inch circle

pi * 1.25^2 = 4.91 in^2 = 3165 mm^2

3165 / 3039 = 1.04 MAF scaling factor

So I need to scale up my MAF by 1.04, is that correct? Where do I apply this in my XDF? I've looked through a few different XDF's but I can't seem to find any field that says anything like this. Do I just need to find the whole MAF calibration table and multiply them all by 1.04? Is there a way I can find the MAF table manually, like is there a standard format that ME9.1 ECU's use for the MAF table that I can look for?

Jumping on the bandwagon of this thread as I'm tuning my MK6 GTI with HP Tuners right now and I'm curious about the MAF "Airflow vs Period" table which seems to be the MAF baseline vs the correction table that I think you're referring to.

Might be good to put in the post what software you are trying to tune with since I know that HP Tuners does not line up with WinOLS at all for table names. Took me a good bit of value-referencing to make the worked example for the MKV useful. HP Tuners has a table that is Engine Load (Row Axis) / RPM (Column Axis) > Scaling Factor. My factory table had mostly values around .94 - 1.0 in it.

Ignitron has fsi and gen1 tsi support now.