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AF-voltage conversion

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Old 03-29-2008, 06:56 PM
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Default AF-voltage conversion

Is there a chert available that gives the voltage-AF conversion for narrowband stock O2 sensors? I need to know what AF equals what voltage; specifically what 12.5 - 1 voltage would be.
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Old 03-29-2008, 10:51 PM
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.450mv = 14.7 AFR

That is the only voltage relation worth anything with a stock narrowband.
Old 03-30-2008, 07:21 AM
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I'm trying to set up a N2O lean cut off switch,and need to set my upper parameter at around 12.4-1. I am also going to need to set it up for testing, but I think I've got that.
Old 03-30-2008, 07:29 AM
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you only have a narrow band o2 sensor,, it is only accurate at 14.7:1 air fuel ratio at .450mv, higher than .450mv is richer than 14.7 and lower is leaner,, how much richer or leaner? who knows because it is only meant to monitor stoich afr

you will need a wide band o2 set up to accuratly do what you want




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