So I was logging and tweaking away, noticing a fair
discrepancy beterrn the displayed and logged WB AFR.
I took a couple passes through VE table mult-paste
anyway, but it was making the car run worse.
In digging through some posts and docs I found that
the LM-1 wideband PID seems to assume 0-5V for
10-20AFR.
But my LM-1's factory default, where it goes every
time the 9V battery dies, is 0-4V for
the 10-20 AFR span. It can be set to 0-5, just don't
bet on it being that way without verifying. And if you
tell it "factory defaults" in LMConfig, you may get settings
that don't play right with the HPTuners PID and the
ones that depend on it (like AFR Error %).
Reprogrammed the LM-1 for 0-5V span and now it reads
dead-nuts in the scanner (with the inst amp inline).