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Sorry yeah - My post was a mess and I attempted to fix it. In my example both sensors are post-cat. I realized later that I had literally pulled the motor apart and we saw no evidence of any knock and everything was sweet, so my WB was likely accurate (enough!, if anything the engine looked a little rich) In your example I'd want to recalibrate both sensors. I realize this is not possible in the real world. Best you can do is: 1) Calibrate current sensor 2) Calibrate a brand new sensor in same location (do you have an older one to compare to? Or is this a new purchase) Observe any changes in readings. I always thought it was 1M, I am clearly out of date. Mine is likely 2m+. I didn't want to have to choose one bank over another in my application. -
Checking a video I took of another run can see quite a different AFR Graph. -
so what do i trust. The dyno one of indeterminate age or my new one?
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By Dose Pipe Sutututu · Posted
Post cat should read leaner vs. pre cat O2. -
My wideband which is post turbo, pre-cat reads leaner. Than the dyno one in tail pipe which is backwards to above. I guess its possible the dyno one or my one is out of calibration. Though mine is pretty new still...
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