Hello everyone! I havent posted in a while but I have a question. I have an 02 Z28 with an LS3 in it now and I have idle fueling nailed down where I like it and right at stoich with a wideband in open loop. It idles smooth as a sewing machine until I go close loop. In close loop the pcm pulls fuel out making it lope as if it has a cam. It has long tube headers and I would like to tune the O2 switchpoints but I can not figure out how to scan or log the airflow mode to see exactly where I need to change the switch points. I have read countless posts and learned a lot but I cant seem to figure this one out.
Can any of you steer me in the right direction?