hi, i have trouble with plx sm afr
when i add extra fuel, my gauge is showing LEAN
if i return fuel settings, gauge is showing actual AFR

if mixture ~10-11 afr, gauge is showing 1-2 sec actual afr and show LEAN.

 

Sorry I don't know more about these components to help you.
Perhaps someone will move your thread to the engine management forum and you will find help.

 

have you tried testing the sensor? theres some vids on youtube I beleive from AEM

basically you soak a rag in carb cleaner/ brake clean, wrap the rag around the sensor it should show full rich....remove the rag and it should go full lean give it a try to make sure the sensor still functions properly

 

ok, i try it.
thanks!

 

i'm resolve problem.
replace WB sensor.