Tuner wrote: ↑Wed Jun 13, 2018 12:16 pm
Joe, I hesitate to say this, but you are mixed up again, in fact you got it exactly backwards.
I think you need to do more tuning and use a few more instruments at the same time.
So you can compare them side to side.
BTW a good working Bosch 4 wire NB sensor will output about 930 mV at max rich with just the heater making it hot.
Typically a cheap universal equivalent will only output about 860 mV. Don't waste your money on one.
As they get older and worn out / contaminated the max voltage (full rich) decreases to the point where they're no longer usable.
Now convert that to the workings of a WB and think on it for a while.
The above chart from innovative is good but it doesn't name the brand of sensor nor mention the above.........well they won't even know. All they're concerned about is selling more widgets.