I have the program but couldnt figure out if it measured air/fuel ratio? Does it?

 

It does not show air/fuel ratio, but the INT, BLM and O2 values can be used to see if it is rich or lean.

 

If you programmed your own eproms you could adjust what data was sent to winaldl! I've got timing displayed instead of the eprom id. I'm also going to be adjusting a few more parts of the data stream to display another o2 value and when I get my parts for my wide band o2 sensor I'll be thinking of a way to hook it up to the ecm and have it display the actual AFR. You can't tell what AFR you're running now because the o2 sensor isn't accurate enough especially 1 wire sensors that get effected by exhaust gas temps . All in all it would be pretty worthless to have the ecm display the AFR when really it's only good at telling you if it's rich or lean at the source.

 

The O2 sensor reading doesn't show u if ur running rich or lean?

 

Yes it does, but it is not good enough to tell you how rich or how lean. It can tell You that you are richer 14.7, but not if you are at 13.5 or 11.5.