O2 sensor idea

[Roger Heflin]

On Mon, 19 Apr 1999, Greg Hermann wrote:

> >On Mon, 19 Apr 1999, Ken Kelly wrote:
> >
> >> Roger,
> >>
> >> The GM PCM only looks at crossings of 14.7 AFM, that is why
> >> they are only calibrated at that point. As soon as you go to
> >> Wide open throttle the PCM ignores the O2 sensor. If the O2
> >> sensor was linear from 14.7 to 12.0 AFR, You could rewrite
> >> the software, so it would stay in closed loop, but it would
> >> be a major rewrite.
> >>
> >> 		Ken
> >
> >I know it works that way.  I just want an accurate O2 sensor so when I
> >am burning new chips I actaully know the O2 sensor is reliable.  The
> >diacom output should have accurate O2 readings, and then tuning would
> >be easier.  I have to be careful right now becuase I really don't know
> >what voltage is exactly 12.5:1, I am just guessing.
> 
> Guessing is the right word for it, Roger. and with anything less than a
> well calibrated wide band O2 unit, you would be continuing to guess. But I
> think you knew that!
> 

That is why I want to get a well calibrated wide band unit and setup a
pic or something similar to give the kind of results the stock
computer wants, and give mv readings that actually mean something.

			Roger