Quote:
Originally Posted by BuBlake
I never looked for commanded AFR. I thought that the "AFR" output was doing double duty: showing commanded as well as measured depending on whether it was CL or OL. Now that I know the "AFR" output is purely measured and there is a separate output in logs for commanded AFR, this changes my game plan entirely!
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The AFR is the output from the front O2 sensor. It is still active in open loop, however it makes no compensations from what it reads.
As far as the O2 effectiveness, it is more accurate (it seems) at higher AFRs but isn't bad at a ballpark figure. However, in the low 11s I would take it's reading with a pinch of salt.