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Originally Posted by morepower2
It will indicate lean as leaner than 14.5:1. Its useless as a tuning tool.
Mike
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Yes , it is useless as an accurate tuning tool , but that's not what I need it for. Currently I'm in the very low tuning stages , so I'm just using it to let me know if something is wrong. I actually don't consider O2 readings to be any sort of accurate. I plan on doing it the way other tuners do it and tune for no knock. I'm currently looking for a diagnostic type tool that hooks into the ECU and can tell me such things as timing advance , knock count , head temperature , using all the sensors the car already has. Both O2 and EGT readings are on the bottom of my list as far as accurate tuning methods go.