Alright, not looking for a debate here But seeking feedback......

First, I don't have a WBO2 and purely relying on my stock NBO2.
I begin looking at some of my logs and noticed that the O2 readings are surprisingly "accurate" !

I've heard all the comments that it reads 0-1V, and it don't read anything accurately before/after stoich of 14.7.

However, when I look at my AFR readout, it is surprisingly "accurate" showing the right numbers at the right place. Unfortunately, I don't have a WBO2 to compare against, but first glance, I thought it looks right.

Comments ?

 

An NBO2 sensor reading will vary with temperature, and the resolution is not sufficient to precisely tune AFR. Its possible to know that the AFR within 1 pt, but that's about it.

 

don't even bother.

for the $200 its going to cost to get a WB02 ....

 

How are the numbers in the right place and "accurate" if you don't have a WB02 to compare against? That doesn't make any sense to me.

I've seen .89 on the narrowband with a swing of 10.9 to 12.1 AFR.

 

They are about as accurate as guessing. Narrowband 02's have pretty lights, thats all.

 

Notice the way the voltage swings. Essentially you are reasonably accurate at .5v or 14.7 Gas AFR, but every little bit you step away from that is inaccurate to an order of magnitude.

 

Using NBO2 to measure AFR is like reading boost with a hobbs switch

 

Thanks ! This graph explains it all !