Speedhut 2-5/8" Air/Fuel Wideband w/ 8.5-18 O2 Gauge (R25-WB1-REV)
The Speedhut 2-5/8" Air/Fuel Wideband w/ 8.5-18 O2 Gauge (R25-WB1-REV) is a precise instrument designed to provide real-time monitoring of your engine's air-to-fuel ratio (AFR). This standalone gauge features an integrated controller, simplifying installation and ensuring accurate readings across a wide 8.5 to 18 AFR range. The included Bosch LSU 4.9 wideband O2 sensor delivers reliable data, crucial for performance tuning, engine diagnostics, and ensuring optimal combustion. With its clear digital display, built-in warning light, and standard 2 5/8" (66mm) size, this gauge is a valuable tool for any enthusiast or professional needing accurate AFR information.
KEY FEATURES AND BENEFITS:
Provides accurate and real-time Air/Fuel Ratio (AFR) readings.
Features a wide measurement range: 8.5 to 18 AFR, suitable for various engine conditions.
Standalone unit with a built-in controller: Eliminates the need for external control boxes.
Includes a high-quality Bosch LSU 4.9 wideband O2 sensor: For reliable data.
Equipped with a warning light: Alerts the user of out-of-range AFR conditions.
Standard 2 5/8" (66mm) gauge size: Fits common mounting solutions.
Easy to install: Includes power and lighting harness.
Clear indication of stoichiometric ratio: 14.7 AFR = 1.0 Lambda.
Gauge Type: Air/Fuel Wideband Gauge
Controller Compatibility: Standalone (Built-in Controller)
Range: 8.5 – 18 AFR
Size: 2 5/8 inch (66 mm)
Hole Size: 2.67 inches (68 mm)
Warning Light: Yes
3 ft Power & Lighting Harness – for LED Lit Gauges and Clocks
LSU 4.9 Wideband O2 Sensor (for the standalone AFWB gauge only)
Mount the Gauge: Choose a suitable location in your vehicle and drill a 2.67" (68mm) diameter hole. Insert the gauge and secure it.
Install the O2 Sensor: Locate an appropriate position in your exhaust system before the catalytic converter (if applicable) and install the provided LSU 4.9 wideband O2 sensor. Ensure it is properly tightened.
Connect the Wiring Harness: Connect the 3 ft Power & Lighting Harness to the gauge. Identify the power and ground wires and connect them to a suitable 12V power source and ground in your vehicle. Connect the lighting wire to your vehicle's lighting circuit if you desire the gauge to illuminate with your other lights.
Connect the O2 Sensor Wiring: Connect the wiring from the LSU 4.9 O2 sensor to the corresponding connector on the gauge or the wiring harness, following the provided instructions.
Initial Setup (if required): Some gauges may require a brief calibration or setup procedure upon initial power-up. Refer to the specific instructions included with your gauge.
Monitor Readings: Once everything is connected and powered on, the gauge will display the real-time Air/Fuel Ratio. Observe the readings during different engine operating conditions.
Set Warning Light (if desired): If your gauge has a programmable warning light, consult the instructions on how to set the desired upper and lower AFR thresholds.
BENEFITS OF USING THE SPEEDHUT 2-5/8" AIR/FUEL WIDEBAND W/ 8.5-18 O2 GAUGE (R25-WB1-REV):
Provides crucial insights into your engine's combustion process for more precise tuning.
Can lead to increased horsepower, improved fuel efficiency, and reduced emissions.
Helps detect and address harmful lean or rich conditions to prevent engine damage.
Built-in warning light offers immediate visual alerts for out-of-range AFR values.
Standalone design simplifies installation, ideal for both DIY users and professionals.
Real-Time AFR Display: Provides continuous and immediate feedback on the air-fuel mixture.
Broad Measurement Spectrum: Accurately reads AFR values from very rich (8.5) to very lean (18).
Integrated Control Unit: Eliminates the need for an external controller, streamlining the installation.
High-Accuracy Sensor Included: Comes with the industry-standard Bosch LSU 4.9 wideband O2 sensor for dependable readings.
Configurable Alert System: Features a warning light to indicate when AFR levels fall outside of a safe or desired range.
Standard Gauge Format: Fits into common 2 5/8" (66mm) gauge pods and mounting solutions.
Simplified Wiring: Includes a dedicated power and lighting harness for easier connection.
Lambda Conversion Reference: Clearly indicates the relationship between AFR and Lambda (14.7 = 1.0).
Product identification
- Brand: Speedhut
- Model / MPN: R25-WB1-REV
