Gauge EVO Wideband Air Fuel w/ Sensor Red/Blue

The Gauge EVO Wideband Air Fuel with Sensor in Red/Blue from PROSPORT GAUGES is an essential tuning instrument for serious engine builders, performance shops, and dedicated DIY enthusiasts. This wideband oxygen sensor-based system provides real-time air-fuel ratio monitoring, allowing you to optimize fuel delivery across the entire RPM range—critical whether you're running a naturally aspirated build or a forced induction setup.

Unlike traditional narrowband sensors that only signal rich or lean conditions at stoichiometric ratio, this wideband system gives you precise AFR values needed for maximizing power output, improving fuel economy, and protecting against detonation or lean-out failures. The EVO wideband reads across a broader operating window—typically 8:1 to 18:1 AFR—using a heated zirconia oxygen sensor that samples exhaust gas composition with millisecond response time. The included sensor mounts in your exhaust system and communicates with the gauge display unit, which features a dual-color LED readout (red/blue configuration) for quick visual reference during tuning sessions or dyno pulls.

Street tuners, drag racers, road course competitors, and engine dynamometer operators will find this tool invaluable for precise tuning. The lightweight 2.3 lb assembly integrates cleanly into your vehicle without adding significant weight or drawing excessive electrical current from your vehicle's charging system. It is designed for easy mounting on your dash, A-pillar, or custom pod, making it a versatile addition to any performance setup.