[Lytheum]

can anyone give me a crash course on doing a MAF calibration? due to my intake my fuel trims are pretty negative across the board. I'm sitting between -8 and -10 at WOT also.

I've done it on my mazda before using a cobb accessport, not sure if it is the same process on a subaru. i would run a log gradually accelerating to see what the fuel trims were between maf breakpoints and then adust the maf table in the area up or down that percentage.