I noticed the new 1.5 histogram, with the "narrowband -
inaccurate" labels, showing O2 voltage rather than AFR.
I understand the reason (there being no universal "cal
map" for voltage - AFR).

However, let me suggest that implementing such a mapping
(O2 mV to AFR, maybe by 50mV ticks) would be valuable to
people who do have the wideband to develop such a map
for themselves. If we got the regression or just entered the
"center of the cloud" to the map table then we could get
the wideband off the car (preserving its limited life etc.) and
have some "inaccurate" (but "good enough&quot AFR monitoring
using that histogram.

And of course people without widebands, but who have a
similar exhaust to someone who does, could maybe get a
"sorta close" map secondhand.

Not that I want in any way to further delay the release of 1.5.0
but this seems like something that, say, 1.5.1 could incorporate.