What voltage would the O2 sensor read if you were running close to 14.7/1? Mine at WOT runs about 0.85witch is probably very rich I think? Any help would be appreciated.

 

are u trying to see if the sensor is working or use it to tune the car?
dont use the factory 02 sensor for tuning or checking afr's
its too narrow and slow for anything remotely useful.
its only good for the stock ecu to indicate rich vs lean inside the 14 range and nothing more