front oxygen voltage?

[vroomevo]

I am still waiting for my WB to come.

i see 0.94 volt till the red line WOT.

rought estimate or conversion from voltage to A/F ratio? 0.94 volt too lean??

Thanks all.

Chong

[MalibuJack]

Don't even bother trying to figure it out.. The AFR translation for a narrow band can change by as much as a half point or more depending on conditions and exhaust temp..

Wait until you can get a wideband on there.. If your ECU is stock, just leave the tune alone for the time being.