The WEGO III Dual Display is a complete air/fuel ratio (AFR) metering system with built-in data logging. The system is a versatile tuning aid and diagnostic tool for all carbureted and fuel injected gasoline powered engines. The WEGO unit displays AFR for two channels and can log over 3 hours data including sensor 1 and sensor 2 AFR values, engine RPM, and a spare 0-5V analog input for sensors such as throttle position or manifold pressure.

The WEGO III unit also has the capability to interface to a customer supplied flex fuel sensor and display 0-100% ethanol content. A switch under the sensor 2 LED allows selection of normal AFR display or percent ethanol display.

The ultra-bright daylight readable blue LED display features automatic dimming under low light conditions. The compact size and wide supply voltage range also allow operation from small rechargeable batteries in a broad range of applications.

The system uses a low cost Bosch LSU 4.2 5-wire wide-band oxygen sensor. By utilizing miniature surface mount electronics technology, digital signal processing techniques, and a switching power supply for the sensor heater, the WEGO III provides the same level of accuracy as lab systems costing thousands of dollars.

WEGO III units also have 0-5 volt analog AFR outputs that are compatible with most data acquisition systems.