couple quick questions need some help

[grmreapr]

so the search button sucks for tryin to find out what exactly i need t install my n62 maf on my s13 blacktop so far i figure i need a reducer from 60-80mm and an aluminum pipe of the same dimensions do i need something to go from my kn air filter to the maf i have searched and came up with basically confusing jargon and no straight answers so im just trying to get a parts list so i have everything but that right their is all i know for now which sucks so what exactly am i missing and are those numbers even right it would be a reducer from like 3 inches to 2.25 inches i think.

[IanS]

you will also need a SAFC or some other form of fuel computer or standalone to adjust the MAFs signal, you cant just put it on and go, you need to retune.

[grmreapr]

I have a apexi neo just tryin to figure out what i need to install the maf