The Bosch 4.9 LSU sensor used in the 30-4110 AEM Wideband UEGO AFR Controller Gauge has a faster light off time and draws less current than the 4.2 LSU sensor used with AEM’s 30-4100 Wideband UEGO Controller Gauge, which will be superseded to the 30-4110 gauge in August, 2014. The Bosch UEGO sensor gives the controller its speed and accuracy. Modifying this will invalidate the sensor’s output. This resistor is specifically created for the exact sensor that it is attached to. There is a laser-etched, calibrated resistor in the sensor’s connector body.
#How to read aem air fuel ratio gauge free#
Our sensors are individually laboratory-calibrated by Bosch and never require free air calibration!ĬAN I CHANGE THE AEM UEGO SENSOR’S CONNECTOR? We use Bosch 4.9 LSU sensors in our wideband controllers. This process involves removing the sensor from the bung while still connected to the controller device, then waving the sensor in the air so it can read atmospheric O2 levels. Some of our competitors require that you frequently perform a free-air calibration procedure to calibrate their O2 sensors. AEM has a comprehensive line of highly accurate, reliable wideband air/fuel controllers that can help ensure your vehicle is optimally tuned. Using a wideband air/fuel controller during the tuning process allows you to monitor AFR and adjust tuning parameters to optimize them for maximum power and efficiency. Running rich (very low air/fuel ratio, excessive fuel) can cause a loss in power, while running too lean (very high air/fuel ratio, not enough fuel) may result in serious engine damage. WHAT IS A WIDEBAND UEGO AIR/FUEL CONTROLLER?ĪEM’s Wideband UEGO (Universal Exhaust Gas Oxygen, pronounced “You-Way-Go”) Controllers are powerful, cost effective tuning tools that allow users to accurately monitor the Air/Fuel Ratio (AFR) of their engine.Īccurate AFR data is critical when tuning an engine. Instructions for the 30-4100 will still be available in the Instructions tab after this change. NOTE: The 30-4100 Wideband UEGO Gauge Controller that uses the Bosch 4.2 LSU sensor will be superseded to the 30-4110 Wideband UEGO Gauge Controller that uses the Bosch 4.9 LSU sensor in August 2014. 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. AEM’s legendary Digital Wideband O2 AFR UEGO Gauge is a wideband UEGO air/fuel ratio controller (AFR) and gauge in one.
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