Accurate AFR data is critical when tuning an engine. 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. 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. AEM has a comprehensive line of highly accurate, reliable wideband air/fuel controllers that can help ensure your vehicle is optimally tuned.

• X-Series Wideband UEGO AFR Controllers Gauge were fastest responding wideband air/fuel ratio controllers in an independent test vs. 17 competitors wideband AFR controllers
• 0-5V & RS232 output for data logging and feedback control, AEMnet (CANbus) for data logging and daisy-chaining multiple controllers up to 16 cylinders
• Factory calibrated resistor does not require free-air calibration, but technology allows for free-air calibration as sensor ages if user desires
• Black bezel and black dual faced faceplate included (gauge only, silver bezel/white gauge option sold separately, PN 30-0300-ACC)
• User configurable display via buttons on the gauge face for changing AFR values, Lambda and O2%, and 3- or 4-digit display
• OBD-II Output; CAN based compatible with 2008 or newer vehicles
• Patented X-Digital wideband technology (Patent 9,575,030)
• Compatible with vehicle/system voltages up to 16V
• 52mm gauge diameter and slim 0.825" gauge depth
• Includes Bosch 4.9LSU wideband UEGO sensor
• Can display AFR values in hundredths of %
• Gauge cup depth only .200" deep
• Auto dimming feature
• Locking connectors