my little handheld does not show me AFR, of course, being it senses with the narrowband sensors. but i would like to find a conversion chart from o2 mv to AFR, if there is one available anywhere.

i searched the web, but couldnt find any helpful info... just tryin to get it close with this predator, before i step up to a real tune later.

i think my o2 mv should be around .88x to .89x, and i think that the higher the mv reading, the richer the AFR is....but i am not 100% sure, and i want to be.

thank you for advise.

 

Of course a wideband is the best way BUT if you use mv you want them at about 880-890mv's at WOT

 

thank you Charlie.

thats what i was a thinkin....but wanted to confirm.

 

It will keep you on the safe side,rather alittle rich than lean until you get a wideband