Using a vafcII on a 02 civic, just a question with the wide throttle and narrow throttle settings. When you go +1 is it adding fuel (or less air) and -1 is removing fuel (or adding air). I have a base setting for it, just trying to correct a few spikes.

 

on my wideband the lower the number, the richer it is. Idk if its the same, but the ratio is the air molecules to fuel, so a higher number is more air molecules to fuel ratio, thus makes it leaner. Not sure if its the same for tuning on the VAFC, but maybe its a start.