Ultimately follow Hyundai's own advice: 1.5 liter motors require 2 ~2.5 gps airfow @ curb idle. I had a grand total of 1.5 gps, idling.

So much for the displacement/MAF reading correlation using inj. ms. vs. eng. disp. theory. Hah! & balderdash! Replace MAF,... Login to read more.