WBo2 AFR METER
Wide Band Air-Fuel Ratio (AFR) Meter LSU 4.9 by sooko.io is an advanced automotive diagnostic tool used to monitor and measure the air-fuel mixture in the engine’s exhaust gases. It is equipped with a LSU 4.9 wideband oxygen sensor, known for its accuracy and durability. This device is designed to provide real-time readings of the engine’s AFR, which is crucial for tuning performance engines, optimizing fuel efficiency, and ensuring proper emissions control. The LSU 4.9 sensor is capable of measuring a broader range of air-fuel ratios compared to traditional narrowband sensors, making it more versatile and effective in various engine applications.

Hardware Features
- MCU RISC-V
The AFR meter is powered by a RISC-V microcontroller unit, RISC-V processors are known for their efficiency and versatility.
- Digital Out Bluetooth Low Energy (BLE)
The AFR meter is equipped with Bluetooth Low Energy for digital communication, allowing it to connect and transmit data wirelessly to compatible devices like smartphones, tablets, or computer
- 2 Channel DAC Out
The Universal Wide Band AFR Meter allows it to connect to a dynamometer for engine testing and tuning purposes. It provides analog voltage signals corresponding to the air-fuel ratio measurement.
- Sensor Type LSU 4.9
The AFR Meter utilizes an LSU 4.9 oxygen sensor, known for its accuracy in measuring the air-fuel ratio.
Software Support
- Bike Studio Android
This Android software is used to display the AFR Meter readings via Bluetooth Low Energy on mobile devices.
- ECM Manager
This software is useful for remapping the engine control unit (ECU) in vehicles. When connected to the AFR Meter, it can display real-time air-fuel ratio values in the tuning table, helping optimize engine performance and fuel efficiency.
- Dynamometer with ADC Channel
The AFR Meter is compatible with a dynamometer (dyno) equipped with an analog-to-digital converter (ADC) channel. During dyno testing, it can provide real-time air-fuel ratio data to assist in optimizing engine performance.