It can output a CAN signal or 0-5V for your ECU. The display is user-configurable via buttons on the gauge face that allow you to change AFR values for different fuels (gas: 8.0:1 to 20:1), Lambda or O2%, change from 3 to 4 digits for the display, perform a free-air calibration, and change the CAN message ID. This slim design allows for many different mounting options. NOTE: The 30-4100 Wideband UEGO Gauge Controller that uses. It unites accuracy, speed and control with an easy to read, digital LED display and sweeping LED needle that changes colors as AFR changes from rich to lean. This gauge is 52mm in diameter with the controller integrated into the gauge, which is less than 7/8ths of an inch thick. AEM’s legendary Digital Wideband O2 AFR UEGO Gauge is a wideband UEGO air/fuel ratio controller (AFR) and gauge in one. Using a Wideband AFR controller during tuning on a dyno allows you to monitor your AFR and adjust tuning parameters appropriately.

The goal of using the device is to prevent a lean fuel mixture that may damage the vehicle’s engine and prevent a rich fuel mixture that decreases performance. Running rich can cause a loss in power, while running lean can seriously damage your engine. An AEM Wideband UEGO Gauge is a wideband sensor controller that monitors air to fuel ratios (AFR) as you tune up your car. This is a powerful tuning tool to accurately monitor the Air/Fuel Ratio of your engine. AEM X-Series Wideband UEGO (Universal Exhaust Gas Oxygen) Air/Fuel Ratio Sensor Controller Gauges are built upon unique, patented 100% Digital technology that makes them the fastest responding wideband air/fuel ratio controllers in independent testing.

Aem air fuel ratio gauge kit