AEM X-Series OBDII Wideband UEGO AFR Sensor Controller Gauge - 30-0334

Accurate AFR data is critical when tuning an engine. Running rich (very low air/fuel ratio, excessive fuel) can cause a loss in power, while running too lean (very high air/fuel ratio, not enough fuel) may result in serious engine damage. Using a wideband air/fuel controller during the tuning process allows you to monitor AFR and adjust tuning parameters to optimize them for maximum power and efficiency. AEM has a comprehensive line of highly accurate, reliable wideband air/fuel controllers that

Accurate AFR data is critical when tuning an engine. Running rich (very low air/fuel ratio, excessive fuel) can cause a loss in power, while running too lean (very high air/fuel ratio, not enough fuel) may result in serious engine damage. Using a wideband air/fuel controller during the tuning process allows you to monitor AFR and adjust tuning parameters to optimize them for maximum power and efficiency. AEM has a comprehensive line of highly accurate, reliable wideband air/fuel controllers that can help ensure your vehicle is optimally tuned.

** Wideband UEGO sensors are wear items and their lifespan is determined by many factors including contamination from leaded fuels, automotive fluids, particulates, mechanical or thermal shock and from being unheated and exposed to the exhaust stream. Free-air calibration may correct drift as a sensor ages, but it is recommended that they are replaced as part of your vehicle's maintenance program. When performing free-air calibration, please follow the procedure outlined in the instruction manual.

X-Series Wideband Gauges and the X-Series Inline Controller support the popular 4.9LSU sensor and can utilize both the factory calibration resistor and free-air calibration methods. This allows users to take advantage of the precise factory resistor calibration when a sensor is new, but then allows for free-air calibrations if the user desires when the sensor ages.** It's the perfect marriage of simplicity and accuracy.

* Independently tested at 360° Product Testing (results reported on August 31st, 2015) against 17 competitor wideband UEGO Air/Fuel Controllers. AEM X-Series Inline with 4.9LSU wideband sensor and AEM X-Series Wideband UEGO AFR Gauge with 4.9LSU sensor recorded the fastest response times.

No. There is a laser-etched, calibrated resistor in the sensor's connector body. This resistor is specifically created for the exact sensor that it is attached to. Modifying this will invalidate the sensor's output.

AEM's Wideband UEGO (Universal Exhaust Gas Oxygen, pronounced "You-Way-Go") Controllers are powerful, cost effective tuning tools that allow users to accurately monitor the Air/Fuel Ratio (AFR) of their engine.

0-5V Output Gasoline values from 8.5:1 to 18.0:1 AFR (Requires Wiring)

0-5V Output Methanol values from 3.75:1 to 8.0:1 AFR (Requires Wiring)

0-5V Output Ethanol values from 5.2:1 to 11.0:1 AFR (Requires Wiring)

0-5V Output E85 values from 5.7:1 to 12.0:1 AFR (Requires Wiring)

FACTORY CALIBRATION RESISTOR OR FREE-AIR CAL, IT'S YOUR CHOICE!

0-5V Output Lambda values from .58 to 1.23 (Requires Wiring)

OBDII Output Gasoline values from 8.0:1 to 20.0:1 AFR

Display Gasoline values from 8.0:1 to 20.0:1 AFR

CAN I CHANGE THE AEM UEGO SENSOR'S CONNECTOR?

WHAT IS A WIDEBAND UEGO AIR/FUEL CONTROLLER?

OBDII Output Lambda values from .55 to 2.00

WHY USE A WIDEBAND AIR/FUEL CONTROLLER?

Display Lambda values from .55 to 2.00

Features & Benefits

• X-Series Wideband UEGO AFR Controllers Gauge were fastest responding wideband air/fuel ratio controllers in an independent test vs. 17 competitors wideband AFR controllers
• 0-5V & RS232 output for data logging and feedback control, AEMnet (CANbus) for data logging and daisy-chaining multiple controllers up to 16 cylinders
• Factory calibrated resistor does not require free-air calibration, but technology allows for free-air calibration as sensor ages if user desires
• Black bezel and black dual faced faceplate included (gauge only, silver bezel/white gauge option sold separately, PN 30-0300-ACC)
• User configurable display via buttons on the gauge face for changing AFR values, Lambda and O2%, and 3- or 4-digit display
• OBD-II Output; CAN based compatible with 2008 or newer vehicles
• Patented X-Digital wideband technology (Patent 9,575,030)
• Compatible with vehicle/system voltages up to 16V
• 52mm gauge diameter and slim 0.825" gauge depth
• Includes Bosch 4.9LSU wideband UEGO sensor
• Can display AFR values in hundredths of %
• Gauge cup depth only .200" deep
• Auto dimming feature
• Locking connectors

Downloads & Resources

• Video File
• Installation Instructions (PDF)