I believe the greddy infometer also reads the a/f ratio that your car sees, how do you think this compares to the widebands out there? I dont believe i've seen anyone have used this for a/f monitoring (has other parameters you could monitor too). I would think it would be ok since the stock 02 sensors is what the car uses to control a/f ratio..

I posted on here since I know more of you guys are probably using widebands n may have a lil more info on the subject.

 

you cannot put any faith in the numbers coming from a narrowband O2 sensor. They are in no way to be used as tuning devices.

 

narrowband o2 sensors basically tells the ECU if its richer or leaner than 14.7... which isn't very close to what you want to tune for FI... do not use it for anything other than a nice shiney light on your pillar or closed loop partial throttle gas mileage!