Been looking at some since yesterday.
Found a few I wanna try out, this is the 1st one I wanna try.
I'm trying to improve gas milage and the low end rpm as much as possible (going up and down hills is a gas killer for the rangers...).
Found the above page which helped a bit more, much easier to understand now.
I did the mod, seemed to work fine, disconnected the batt to reset the ecu and I'm letting her sit for a while to ensure she gets reset.
Next I play with the intake.