[GQ4Life]

Originally Posted by NME

This link was helpful: http://forums.rennlist.com/rennforums/944-turbo-and-turbo-s-forum/603073-o2-sensor-voltage-range-to-afrs.html

Pretty much says “2.5 x Volt + 10 = AFR” based on a 0v – 4v O2 sensor. Is this what our O2 sensor has for voltage?

If ours is a 0v - 1v system (narrowband) then the equation would be "10 x Volt + 10 = AFR"

I am pretty sure ours in a narrow band. Which only measure cruising AFR 13 to like 17 not good for checking at WOT under 12