Data log.JPG

This is a data log i did on my car for the new mods on the bone stock tune besides adding some advance to it. The big table shows you all kinds of info at that specific time interval. Notice the a/f ratio at the bottom of the table where it says wide band. Now look acroos from that just above the line graph table and you the mass airflow and the hz it is reading, you take those numbers to the table in the other picture and do the math to get your correct mass airflow reading to get the right a/f ratio. You notice that the wideband is saying 14.52 well the actual commanded a/f ratio was 13.0 but since it has all the mods on it that have now thats what is read. Real bad lean. This is all at WOT too.