Introducing the New WB-O2 Nano | High-Precision Wideband O2 Control

FuelTech is proud to announce the New WB-O2 Nano, a powerful yet compact wideband O2 sensor conditioner that redefines precision and configurability. Engineered for professional performance, the New WB-O2 Nano delivers accurate air-fuel ratio readings with flexible sensor compatibility and robust data communication—all housed in a rugged, sleek new design.

Universal Compatibility with Five O2 Sensor Options

The New WB-O2 Nano supports a broad range of popular wideband O2 sensors, making it a versatile solution across many platforms:

• Bosch LSU 4.2

• Bosch LSU 4.9

• Bosch LSU 5.2

• NTK ZFAS

• NTK Wideband O2 Sensor

Whether you're tuning a high-performance racing car, a marine engine, or a motorsport build, the New WB-O2 Nano gives you the flexibility to choose the sensor that best fits your needs.

Optimized Sensor Heating for Reliable Performance

One of the key innovations in the New WB-O2 Nano is its three configurable sensor heating modes via CAN:

• Normal – balanced warm-up for standard usage

• Fast – aggressive heating for quick sensor readiness

• Current Limited – for sensitive systems or alternate power conditions

An auto startup mode ensures the sensor reaches the optimal temperature for precise measurements, every time. This advanced thermal control helps extend sensor life and improves reading accuracy—critical in high-demand environments.

Extended Lambda Reading Range & Precision Hardware

With cutting-edge signal conditioning hardware, the New WB-O2 Nano offers an extended wideband scale, capable of reading values slightly lower than 0.21 λ. This provides precise measurements across richer mixtures and challenging tuning conditions, giving you more detailed insight into your engine’s performance.

Seamless Integration via CAN with FuelTech ECUs

Designed to work natively with the PowerFT and VisionFT ECU lines, the New WB-O2 Nano communicates entirely through the CAN network, enabling:

• High-speed datalogging

• Use of multiple conditioners for bank-to-bank or per-cylinder O2 setups

• Freeing up analog inputs on your ECU for other critical sensors

This CAN-based approach ensures scalability and clean integration for complex or high-channel-count applications.

Familiar Display, Modern Updates

The New WB-O2 Nano retains the familiar nano display format our users know and love, now enhanced with:

• Day/Night dimming configuration

• Shift light alert functionality

• Updated case design to match nanoPRO mounting patterns

This makes installation seamless, with improved visibility and functionality for diverse use cases.

Built for Harsh Environments

Rated IP67 when properly connected, the WB-O2 Nano is built to withstand marine, off-road, and high-vibration automotive conditions. It's ready for action, no matter where your vehicle takes you.

Compact, configurable, and exceptionally accurate, the WB-O2 Nano is the ultimate wideband controller for those who demand reliable O2 data in any environment. The WB-O2 Nano delivers the performance and durability you’ve come to expect from FuelTech.