AEM X-Series Wideband UEGO AFR Sensor Controller Gauge Accessory Kit

AEM X-Series Wideband UEGO AFR Gauge Kit | Fast Response Tuning

Optimize engine tuning with the AEM X-Series Wideband UEGO AFR Controller Gauge. Features patented X-Digital response, auto-dimming display, and multiple output modes.

The AEM X-Series Wideband UEGO AFR Sensor Controller Gauge (PN 30-0300) delivers high-speed digital feedback for accurate engine tuning. Powered by patented X-Digital Technology, this unit significantly reduces deadtime to capture immediate air/fuel ratio changes during rapid transient engine states.

Designed in a standard 2-1/16" (52mm) diameter outer housing, the gauge features a ultra-slim depth (under 0.825") that allows installation in virtually any tight cabin space or gauge pod. The center digital display is 87% larger than previous generations, making readings effortless to scan at a glance. Equipped with a factory-calibrated resistor in the Bosch 4.9 LSU sensor harness, it requires no free-air calibration out of the box, while still offering manual free-air calibration capabilities as the sensor ages. Optional white faceplates and silver bezels can be added with the AEM Gauge Accessory Kit (PN 30-0300-ACC).

Best Uses

1. Performance Tuning & Dyno Calibration: Essential for monitoring engine air/fuel ratios in real time to prevent dangerous lean conditions or loss of power from overly rich fuel mixtures.
2. Forced Induction Applications: Crucial for turbocharged or supercharged vehicles where accurate fuel management under boost is vital to prevent engine damage.
3. Standalone & OBDII Data Logging: Integrates seamlessly with standalone ECUs, piggybacks, or data loggers using 0-5V analog, RS232 serial, or CANbus/AEMnet communication outputs.

Features

1. Patented X-Digital Technology: Ensures loss-less signal fidelity with class-leading response times as fast as 20ms typical.
2. Bosch LSU 4.9 Sensor Compatibility: Utilizes precision factory calibration resistor mapping with auto-detection for both Bosch LSU 4.9 and AEM/FAE wideband sensors.
3. Multi-Output Connectivity: Features integrated 0-5V analog output, RS232 serial output, and AEMnet (CANbus) for direct data logging or daisy-chaining multiple gauges.
4. Configurable Digital Display: Supports 3-digit or 4-digit precision readout modes, toggling seamlessly between AFR, Lambda, and O2% values.
5. Ultra-Slim Profile Housing: Compact 52mm outer diameter with a total depth under 0.825” (and cup depth of only 0.200”) for universal mounting versatility.

Benefits

1. Engine Protection: Instantly warns you of lean air/fuel mixture conditions under high engine loads, protecting against internal damage.
2. Superior Readability: High-contrast LED center display with auto-dimming function ensures clear visibility in full daylight or dark night driving conditions.
3. Plug-and-Play Maintenance: No complex manual free-air calibration required when installing a new sensor, saving time and simplifying setup.
4. Versatile Fuel Support: Accurately calculates AFR across multiple fuel types, including unleaded gasoline, ethanol (E85), methanol, propane, and diesel.
5. Customizable Styling: Easily customizable aesthetics with interchangeable black or silver bezels and reversible dual-sided faceplates.