hey guys just now finally got up and tuning, had a whole deal with this about a month ago if you recall.

in any case iwas trying out ARAP on my 87 GTA and i noticed a whole different behavior to the 02 sensor then what i'm used to seeing, it was a nice easy sine wave covering almost the whole range at idle, now in the process of trying a few different stock bins, i tried a stock ABWT bin and the wave was more of a zig zag and very tight, as in very narrow range. i don't know how to read the o2 yet but why would the behavior be so different?

 

Check the O2 rich/lean swing points in each bin.

 

Lag filter constants could also be different in the BINs.....

 

i've never heard of either of those