[quote="disallow"]My voltage readings are the similarly confusing, as are yours.
I replaced with Denso about 3-4 years ago, and also had an improvement in fuel economy, though it was fairly short lived.
You need to watch the trim readings, and its the speed at which the sensor reacts that is better on a new sensor.
Here is a short video I took of my B1S1 B1S2 B2S1 B2S2 readings.
https://www.youtube.com/watch?v=OX-V8rIE5nM[/quote]
Yours seem way more responsive than mine. Only when I'm at about 3500 rpm on the highway does my b2s1 sensor come into the normal range. Super confusing because it's constantly at .9