I discovered something interesting today while doing VE learns. Wide band learns will put you close but it doesn't change the fueling, only calculates corrections which only take affect after you burn the new bin file. Sometimes it overshoots so I still had to hand edit to smooth the table. Doing VE learns in closed loop is much more accurate but I was not getting good cross counts in closed loop and changing the PRP tables was not helping much. Then I noticed the Airflow was being reported as 22 gps at idle. So I read that airflow at idle should be 2-7 grams per second depending on engine size and idle speed. Grams/second is only used in several PRP tables for closed loop fueling. We have no MAF to measure airflow so it is calculated using the Airflow-Displacement Scalar. Mine was set at 350 ci because that is what I have. Since I had a reported 22 gps which is about three times what it should be, I reduced it to 115 ci. Now it reports 7 grams/second at idle and the cross counts look closer to normal. I am posting an image of the cross counts and an unedited narrow band VE learn in closed loop after a 35 minute drive on residential streets to some freeway, a total of 25 miles.
Comments or suggestions are welcome. I am always learning.