A/F Base?

[ShionS14]

I was just wondering if anyone knew what A/F Base is actually measuring or how to convert it to A/F ratio if possible. I am using Nissan Datascan and not really sure what the number I am seeing means. Screenshot:

[lrb_2000]

A/F Base - is a percentage of a fuel map setting currently used to run engine in closed loop, also called Short Term Fuel Trim.

http://202.43.226.57/ScreenShots.htm

[ShionS14]

so with that little bit, that means at that rpm i was using 100% of my fuel map that the ecu has programmed for that rpm, and my O2 was still telling me I was rich....right?

[lrb_2000]

I just found that on google lol.. I thought the link could help you out... but, what you said makes sense from the description..

[ShionS14]

well thanks it does help, i couldn't really find anything on yahoo