Wideband Air Fuel Ratio Gauge Kit

Wideband Air Fuel Ratio Gauge Kit

AEM’s X-Series Wideband UEGO Air/Gasoline Ratio Sensor Controller Gauges are built upon unique, patent-pending X-Digital know-how that makes them the quickest responding wideband air/gas ratio controllers in unbiased testing against 17 other wideband UEGO air/gas controllers*.

The X-Series Wideband UEGO AFR Sensor Controller Gauge (PN 30-0300) measures 2 1/sixteenth-inch (52mm) in diameter, and features a fashionable, visually striking faceplate and new seven-phase center display that's 87% larger than the 30-4110 AEM Wideband Gauge’s center display. This creates the notion of a bigger total gauge, however in a typical 52mm dimension for simple mounting. Its slim depth (lower than one inch total) and extremely slim cup depth of .200-inches dramatically increases its utility base and potential mounting locations.

The X-Series Wideband UEGO AFR Gauge has a consumer configurable display via buttons on the gauge face that help you change AFR values for different fuels, Lambda or O2%, change the center display to 3 or 4 digits, perform a free-air calibration if desired because the sensor ages, and change the CAN message ID when linking a number of X-Series Inline Controllers or X-Series Controller Gauges. A black bezel and black dual-faced faceplate for air/gas and Lambda are included, and an optionally available silver bezel with white dual-faced Wideband Air Fuel Ratio Gauge Kit and Lambda faceplate is obtainable (PN 30-0300-ACC, sold separately). An Auto Dimming feature is included. Locking connectors guarantee a optimistic connection between the harnesses and gauge and a brand new single board design adds to the new gauge’s durability.

The gauge includes a zero-5v and RS232 Serial Port output for suggestions management and information logging, and an AEMnet (CANbus) output for information logging. AEMnet permits extra X-Series Wideband Controllers to be daisy chained together (up to 16 cylinders) for recording AFR in a number of cylinders. It helps vehicle/system voltages up to 16V, and can be utilized on EFI or carbureted purposes, and dynamometers in purposes using gasoline, methanol, ethanol, Diesel, propane and CNG.

X-Digital Technology

X-Digital wideband know-how offers these controllers the power to read and report values that other controllers don't, which might ship extra optimized engine tuning and a safer total operating condition. The controller’s excessive velocity digital implementation ensures no loss of sign constancy and full transient response, making it able to identify the slightest fluctuations in AFR and output them in full value.

Why Does Response Time Matter?

Faster response time improves wideband suggestions management, and can present a safer, extra powerful and accurate tune. AEM’s Wideband Controllers with X-Digital know-how can cut back deadtime and enhance the performance of your vehicle via extra accurate AFR tuning. Deadtime is the delay between when exhaust gasoline composition changes and when that change is reported by the O2 sensor. While move of exhaust gases (transport delay) can affect deadtime, it isn't the only source. Typically, the sensing components response to the gasoline is the most important contributor to deadtime when an engine is in excessive RPM below load.

When tuning an engine using wideband AFR suggestions management on an inertia dyno, deadtime impacts the information you're looking at as a result of it's reported in a unique operating location than when it really occurred. This means with long deadtimes, whatever changes you make to the bottom fueling will seemingly be in the unsuitable location. This can be significantly harmful to excessive compression and excessive-increase forced induction automobiles, and EFI programs that use suggestions management to auto tune.

Reducing deadtime improves wideband suggestions management, and can present a safer, extra powerful and accurate tune. AEM’s Wideband Controllers with X-Series digital know-how can cut back deadtime and enhance the performance of your vehicle via extra accurate AFR tuning.

Factory Calibration Resistor or Free Air Output
The X-Series Wideband Gauge and X-Series Inline Controller help the favored Bosch 4.9LSU sensor and can make the most of both the manufacturing unit calibration resistor and free-air calibration strategies**. This enables customers to reap the benefits of the exact manufacturing unit resistor calibration when a sensor is new however then permits without cost-air calibrations if the consumer wishes when the sensor ages. It’s the proper marriage of simplicity and accuracy!

What Is A Wideband??

AEM's Wideband UEGO (Universal Exhaust Gasoline Oxygen, pronounced “You-Manner-Go”) Controllers are powerful, price effective tuning tools that allow customers to precisely monitor the Air/Gasoline Ratio (AFR) of their engine.

Why Use A Wideband??

Correct AFR information is vital when tuning an engine. Running rich (very low air/gas ratio, excessive gas) may cause a loss in energy, while running too lean (very excessive Wideband Air Fuel Ratio Gauge Kit ratio, not sufficient gas) could result in serious engine damage. Utilizing a wideband air/gas controller throughout the tuning process allows you to monitor AFR and adjust tuning parameters to optimize them for maximum energy and efficiency. AEM has a comprehensive line of highly accurate, dependable wideband air/gas controllers that can help guarantee your vehicle is optimally tuned.


  • X-Series Wideband UEGO AFR Controller Gauge were quickest responding wideband air/gas ratio controllers in an unbiased check vs. 17 competitor wideband AFR controllers
  • Contains Bosch 4.9LSU wideband UEGO sensor
  • Factory calibrated resistor doesn't require free-air calibration, however know-how permits without cost-air calibration as sensor ages if consumer wishes
  • Compatible with vehicle/system voltages up to 16V
  • zero-5V & RS232 output for information logging and suggestions management, AEMnet (CANbus) for information logging and daisy-chaining a number of controllers up to 16 cylinders
  • Can display AFR values in hundredths of %
  • 52mm gauge diameter and slim 0.825” gauge depth
  • Gauge cup depth only .200” deep!
  • Auto dimming feature
  • Person configurable display via buttons on the gauge face for changing AFR values, Lambda and O2%, and 3- or four-digit display
  • Black bezel and black dual faced faceplate included (gauge only, silver bezel/white gauge possibility sold separately, PN 30-0300-ACC)
  • Locking connectors