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  • AEM X-Series Wideband UEGO AFR Gauge (No Sensor)
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AEM X-Series Wideband UEGO AFR Gauge (No Sensor)

AEM
AEM30-0300NS
In stock
Gauges
$193.99
AEM X-Series Wideband UEGO AFR Gauge (No Sensor) | 30-0300-NS Monitor engine tuning with the ultra-fast AEM X-Series Wideband UEGO AFR Gauge (No Sensor). Features...
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$193.99
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AEM X-Series Wideband UEGO AFR Gauge (No Sensor)
Description

AEM X-Series Wideband UEGO AFR Gauge (No Sensor) | 30-0300-NS

Monitor engine tuning with the ultra-fast AEM X-Series Wideband UEGO AFR Gauge (No Sensor). Features X-Digital tech, 0–5V, RS-232, and CANbus outputs. 

The AEM X-Series Wideband UEGO Air/Fuel Ratio Gauge (No Sensor) offers precision air-fuel ratio monitoring and ultra-fast response times. Powered by AEM's proprietary X-Digital technology, this gauge reads changes in AFR faster than traditional analog and digital wideband controllers, allowing for quicker closed-loop feedback and precise engine tuning.

Designed for custom installs, replacement needs, or setups where a Bosch LSU 4.9 sensor is already on hand, this unit includes the gauge head unit, wiring harness, and mounting hardware. The slim 52mm (2-1/16") housing features a bright 4-digit central LED display paired with a 24-color LED sweeping needle for real-time visual tracking. It seamlessly supports multiple data outputs—including 0-5V analog, RS-232 Serial, and AEMnet CANbus—making it compatible with aftermarket ECUs, standalone systems, and data loggers. 

 

Best Uses

  1. Closed-Loop Engine Tuning: Ideal for calibrating aftermarket ECUs (e.g., AEM, Megasquirt, Haltech, Link) using real-time air/fuel data.
  2. High-Performance & Forced Induction Applications: Essential for monitoring lean/rich conditions in turbocharged, supercharged, or nitrous vehicles.
  3. Sensor Replacement or Existing Sensor Builds: Great choice if you already own a Bosch LSU 4.9 sensor and only require the X-Series controller gauge and harness.
  4. Custom Dash & Pod Mounting: Ultra-slim 0.825” depth makes mounting simple in standard 52mm (2-1/16”) gauge pods or custom dashboards.
  5. Data Logging Integration: Perfect for feeding real-time AFR metrics to external logging devices via CANbus, 0-5V, or RS-232 Serial outputs.

Features

  1. X-Digital Technology: Proprietary high-speed digital controller architecture delivers ultra-fast sensor response times.
  2. Multiple Display Modes & Units: Supports AFR (8.0:1 to 20.0:1), Lambda (0.55 to 2.00), and O2% readouts with configurable 3- or 4-digit precision.
  3. Comprehensive Output Connectivity: Features 0–5V differential analog output, RS-232 serial output, and AEMnet CANbus integration.
  4. Compact 52mm Slim Design: Fits standard 2-1/16" (52mm) gauge pods with an overall depth under 1 inch for tight space installations.
  5. Auto-Dimming LED Display: Modern multi-color sweeping LED rim and central readout automatically adjust brightness to match ambient cabin lighting.

Benefits

  1. Faster Response for Safer Tuning: Rapid data transmission allows ECUs to make split-second closed-loop fuel corrections, protecting engines against lean-condition damage.
  2. Cost-Effective Option: Saves money if you already have a functional Bosch LSU 4.9 sensor or need to replace only the gauge unit.
  3. Versatile Fuel Support: Accurately measures air-fuel ratios across various fuel types, including Gasoline, Ethanol (E85), Methanol, CNG, and Propane.
  4. Seamless ECU & Logger Compatibility: Multiple signal outputs allow integration with almost any engine management system, standalone tuner, or data acquisition tool.
  5. No Free-Air Calibration Required: Automatically utilizes the factory calibration resistor in Bosch LSU 4.9 sensors while still offering optional free-air recalibration as the sensor ages.
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