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single wire o2 conversion to 3/4 (heated)
This was discussed on one of the other boards i frequent. Has anyone added this to their 1980s/1990s obd cars and experienced a smoother running during warmup? I think with the colder weather setting in the faster we can get into closed loop the better. My only question, is if the o2 heater is running off 12v or another voltage i have to find (or make) elsewhere in the car? I know that with a single wire sensor, the sensor housing itself is the ground like a spark plug, and it has it's own signal to carry back to the ecu.
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