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air/fuel ratio gauge

Fancy light show. Won't tell you much as the narrow band O2 sensor doesn't work like a wide band. Basically the stock o2 sensor has 3 positions. Lean, stoich and rich. Not much dithering in between.
 
So the gauges that read off the factory o2 sensor are narrow band?
I understand broad is better...so the only way to have a broad band sensor is to get one that has its on o2 sensor?
 
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