Using MAF for Engine Efficiency Table

[RGAClarke]

Just wondering if there is a work around or someone in M1 Build has created software to enable MAF to be used for the Engine Efficiency table.
I have a Subaru OEM MAF sensor resource working on an M130 and it would be good for my application (light aircraft) which experiences large ambient pressure variation, high but variable tailpipe airflow (150-320 kph) with fast idle and steady throttle inputs.
I have an ambient MAP sensor and could use the available Engine Efficiency axis for this but it is probably not going to be as good as a MAF efficiency table.
I would be a buyer if someone has or is developing software to enable a MAF based engine efficiency table.
Rupert