Hi a91what I have to thank you for responding I have read and watched your videos, right now my car is tuned sd runs great but wanted to see about running it with my mass air that is still in place .
Does it run better with mass air ? My maf is a pro m 80mm
Did you build the pnp? If so then it's simple to open the case and wire it in.
If you have an ms2pnp from diy then you will need to wire it into the options port.
either will work but if you are using the external map pin be aware you will have to jumper it over inside the case.
The bolow picture below is from a how to I helped with for one of the digital dashes offered by dd-efi but instead of oil pressure you can use it to bring the MAF in. the jumper used is a common pin jumper used in arduino projects
The honest question is why? MAF had it's benefits back in the day, but MS is literally designed to run without the MAF and remove that limitation and hassle. You don't have to limit yourself to being restricted by the size of a MAF, you tune with MAP (vac/pressure in intake) TPS, etc.. it is much more flexible and how many other engines are run/tuned.