O2 sensor idea

[Greg Hermann]

>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!

Regards, Greg