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What is the difference between a wide band and narrow band O2 sensor?

April 26, 2017band difference narrow O2 sensor wide

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What is the difference between a wide band and narrow band O2 sensor?

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A narrow band O2 sensor can only correctly measure stoichometric air fuel ratios. For gas this would be 14.7 to 1. Measuring a specific air fuel ratio other than 14.7 to 1 accurately with a narrow band O2 sensor is not possible. The wide band O2 supplied with your XFI is capable of accurately measuring air fuel ratios from 8 to 1 up to 16 to 1, and is preferred over the narrow band.