Quote:
Originally Posted by saand
I am trying not to spend $50 on a o2 sensor because if it saves maybe 5% it will take several years to get the payback on that.
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Er... actually, you could recoup that in a matter of months or even weeks. It depends on how much you drive, and the cost of gasoline.
Quote:
Originally Posted by saand
So i am going to experiment with how lean i can make my car using the narrow band sensor, i am going to make a circuit that will make the car try to control the air fuel ratio so the o2 sensor is outputting say 0.05v rather than 0.45v. I unfortunately cant find a datasheet on the o2 sensor i have or even a generic that has voltage output to air fuel ratio but i figure ill see the results on my fuel meter and see how it goes.
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Er... That's pretty scary territory there. How would you compensate for the effects of E05 or E10 or E15, given that they have differing stoichiometric AFRs, and given that normal heated narrowband O2 sensors are not at all accurate outside a lambda of 1? You might end up frying some engine internals if you're not careful.