Description
The Speedhut 2-1/16″ Lambda .6-1.2 Air/Fuel Gauge w/ Warning (R2-WB2-REV) is a compact and effective solution for monitoring your engine’s air-fuel ratio. This standalone wideband gauge provides accurate, real-time feedback, crucial for optimizing engine performance and ensuring its longevity. With an integrated controller, installation is simplified, eliminating the need for external components. The included programmable warning light allows you to set custom thresholds, providing an immediate alert to potentially harmful lean or rich conditions.
KEY FEATURES AND BENEFITS:
- Accurate Monitoring: Precisely measures the air-fuel ratio within a lambda range of 0.6 to 1.2, providing vital data for engine tuning and diagnostics.
- Standalone Operation: Features a built-in controller, simplifying the installation process and reducing the number of required components.
- Integrated Warning System: Equipped with a programmable warning light that can be set to alert the user to high or low air-fuel ratio conditions, helping prevent potential engine damage.
- Complete Kit: Ships with the necessary LSU 4.9 Wideband O2 Sensor and a 3 ft Power & Lighting Harness, ensuring you have the essential components for installation.
- Compact Size: The 2-1/16 inch (52mm) gauge diameter allows for easy mounting in various locations, with a required hole size of 2.10 inches (54mm).
SPECIFICATIONS:
- Gauge Type: Air/Fuel Wideband Gauge
- Range: 0.6 – 1.2 Lambda
- Size: 2 1/16 inch (52mm)
- Hole Size: 2.10 inches (54mm)
- Warning Light: Yes
- Ships With:
- 3 ft Power & Lighting Harness – for LED Lit Gauges and Clocks
- LSU 4.9 Wideband O2 Sensor (for the standalone AFWB gauge only)
HOW TO USE:
- Mount the Gauge: Locate a suitable 2 1/16 inch (52mm) opening in your vehicle’s dashboard or instrument panel. Secure the gauge in place using the provided mounting hardware.
- Install the O2 Sensor: Install the included LSU 4.9 Wideband O2 Sensor into the exhaust system at a location recommended for wideband sensors (typically before the catalytic converter and after the exhaust manifold). Ensure the sensor is properly tightened.
- Connect the Wiring Harness: Connect the 3 ft Power & Lighting Harness to the appropriate power and ground sources in your vehicle. Refer to your vehicle’s wiring diagram for correct connections. Connect the other end of the harness to the gauge.
- Connect the O2 Sensor Wiring: Connect the wiring from the LSU 4.9 Wideband O2 Sensor to the corresponding connector on the gauge’s wiring harness. Ensure a secure connection.
- Set the Warning Light (Optional): Once the gauge is powered on, follow the manufacturer’s instructions (typically found in the gauge’s manual, which was not provided in our conversation but would be included with the product) to set the desired high and low warning thresholds for the air-fuel ratio.
- Monitor Readings: Once installation is complete, the gauge will display the real-time air-fuel ratio. Observe the readings during vehicle operation to ensure optimal engine performance.
BENEFITS OF USING THE SPEEDHUT 2-1/16″ LAMBDA .6-1.2 AIR/FUEL GAUGE W/ WARNING (R2-WB2-REV):
- Provides precise monitoring of the engine’s combustion process, supporting peak performance and fuel efficiency.
- Real-time data assists in accurate engine tuning and diagnostics.
- Integrated warning system offers early detection of lean or rich conditions to prevent engine damage.
- Standalone design streamlines installation, making it accessible for both hobbyists and professionals.
- Essential for identifying fuel delivery or combustion-related issues, ensuring engine health and longevity.
FEATURES:
- Immediate and continuous air/fuel ratio feedback enhances engine management.
- Built-in microprocessor ensures stable and accurate readings across the lambda range.
- Integrated gauge housing includes both sensor interface and controller.
- Customizable warning alerts allow for precise user-defined thresholds.
- Optimized for direct use with the included LSU 4.9 Wideband O2 Sensor.
- Streamlined wiring with included power and lighting harness simplifies installation.






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