I have noticed that when I tune strictly with the wideband for part throttle tuning I get an afr error of 0 to -2.
But when I turn the O2 narrowbands back on and go back into closed loop my LTFT's read between +2 to +9.
I let it free air calibrate for about 35 to 40 minutes.
Do I need a new wideband sensor?
Or is this common?
I am just getting 2 different data from the wideband and narrowbands.