Wideband o2 sensors FTW! A narrowband sensor is only accurate at one tight range of 14.7:1, the stoichiometric AFR for gasoline. A wideband..
Wideband Oxygen Sensors Vs. Narrowband
wideband vs narrow band O2 (results inside) - Third Generation F
RSR Air/Fuel Ratio Gauge
DownloadSM-AFR User Guide SM-AFR Sensor Module for measuring Wideband Air/Fuel Ratio. Includes a Bosch LSU4.9 oxygen sensor, control box,
SM-AFR - Wideband Air/Fuel Sensor Module
Comparison of performance using wide-band versus narrow-band
The Basics Of Air Fuel Ratio – Sho-Me Speed
Air Fuel A/F Ratio Basics Wideband vs Narrow O2 sensor
Comparison of performance using wide-band versus narrow-band
Narrow Band vs. Wide Band Oxygen Sensor Summary