Get Accurate Air/Fuel Ratio Data Directly Into Your Link G4+ Fury If you're tuning a performance engine, accurate air/fuel ratio data isn't optional. The Bosch LSU 4.9 Wideband O2 Sensor for Link G4+ Fury provides the wideband oxygen feedback your ECU needs for precise fuel tuning, datalogging, closed-loop lambda control, and engine protection. Designed for use with the built-in wideband controller in the Link G4+ Fury ECU, this sensor connects directly to the appropriate Fury wiring—eliminating the need for a separate external wideband controller. Why a Wideband O2 Sensor Matters Your wideband sensor tells the ECU exactly how rich or lean the engine is running. That information is critical when tuning: Naturally aspirated engines Turbocharged engines Supercharged engines High-horsepower street cars Race engines E85 and flex-fuel applications With accurate lambda/AFR feedback, your tuner can properly calibrate fueling throughout the engine's operating range instead of guessing. Designed for the Link G4+ Fury The G4+ Fury features an onboard wideband lambda controller, allowing a compatible Bosch LSU sensor to be connected directly to the ECU. This gives you a cleaner installation with fewer external components. Once properly wired and configured, the Fury can use wideband information for: Real-time AFR/lambda monitoring Fuel tuning Closed-loop lambda correction Datalogging Fuel-system diagnostics Engine protection strategies Bosch LSU 4.9 Wideband Technology The Bosch LSU 4.9 is widely used in professional aftermarket engine-management systems because of its accuracy, response, and broad measurement capability. For a properly tuned standalone ECU setup, it gives your Link ECU the feedback needed to see what the engine is actually doing. Key Features Genuine Bosch-style LSU 4.9 wideband oxygen sensor application Designed to suit Link G4+ Fury 5/6-wire wideband O2 sensor configuration Works with the G4+ Fury's onboard lambda control hardware No separate external wideband controller required when correctly configured with the Fury Provides real-time lambda/AFR feedback Supports closed-loop lambda control Excellent for datalogging and tuning Suitable for naturally aspirated and boosted engines Ideal for gasoline, E85 and other compatible performance applications Professional solution for street and motorsport builds More Than Just an AFR Gauge A wideband sensor becomes significantly more useful when its data is available directly inside the ECU. Instead of simply watching AFR on a separate gauge, your Link ECU can log the information alongside: RPM, boost pressure, injector duty cycle, fuel pressure, ignition timing, throttle position, engine temperature and other ECU parameters. That makes diagnosing fueling problems and dialing in the calibration much easier. Give Your Tuner the Data They Need You can have the best injectors, fuel pump, turbo, and engine components available—but without accurate feedback, you don't know if the engine is actually receiving the fuel it needs. The Bosch LSU 4.9 Wideband O2 Sensor for Link G4+ Fury gives your ECU one of the most important measurements required for proper calibration. Accurate data. Better tuning. Better engine protection. Important Compatibility Note This sensor is intended for applications using a compatible Link G4+ Fury ECU and the appropriate 5/6-wire wideband configuration. Verify your ECU model, sensor type, connector, wiring, and Link ECU configuration before ordering.