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    • X-Series OBDII Wideband AFR Gauge Kit OBDII Connectivity on 08-up Vehicles Only AEM Electronics
    • X-Series OBDII Wideband AFR Gauge Kit OBDII Connectivity on 08-up Vehicles Only AEM Electronics
    • X-Series OBDII Wideband AFR Gauge Kit OBDII Connectivity on 08-up Vehicles Only AEM Electronics
    • X-Series OBDII Wideband AFR Gauge Kit OBDII Connectivity on 08-up Vehicles Only AEM Electronics
    • X-Series OBDII Wideband AFR Gauge Kit OBDII Connectivity on 08-up Vehicles Only AEM Electronics
    • X-Series OBDII Wideband AFR Gauge Kit OBDII Connectivity on 08-up Vehicles Only AEM Electronics
    • X-Series OBDII Wideband AFR Gauge Kit OBDII Connectivity on 08-up Vehicles Only AEM Electronics
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    Sale!

    AEM Electronics AEM X-Series OBDII Wideband AFR Gauge Kit 30-0334

    Vendor: AEM Electronics
    SKU: FDDP_30-0334
    Save $28
    Sale Price $286.95 Regular Price $314.95
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    WHY RESPONSE TIME MATTERS - Faster response time improves wideband feedback control, and can provide a safer, more powerful and accurate tune. AEM's Wideband Controllers with X-Digital technology reduce deadtime and can improve the performance of your vehicle through more accurate AFR tuning.


    AEM Electronics AEM X-Series OBDII Wideband AFR Gauge Kit 30-0334


    Specifications:

    1385 Black
    Body Diameter 52
    Brand AEM
    Category Gauges and Gauge Accessories
    Emission Code 5
    3310 Black
    Face Diameter 52
    1794 Round
    Gauge Diameter 2 1/16
    3390 Performance
    Grade Type Professional
    1814 No
    30 Yes
    part type Air / Fuel Ratio Gauge
    Product Type Wideband Gauge Kit
    Sub Category Instrument Panel
    26 Performance
    3145 Universal
    Warning California Proposition 65
    Warranty 12 Months - Excluding Bosch O2 Sensor
    Wire Gauge Measurement 22
    Wiring Harness Length 96
    2087 48
    1385 Black
    Body Diameter 52
    Brand AEM
    Category Gauges and Gauge Accessories
    Emission Code 5
    3310 Black
    Face Diameter 52
    1794 Round
    Gauge Diameter 2 1/16
    3390 Performance
    Grade Type Professional
    1814 No
    30 Yes
    part type Air / Fuel Ratio Gauge
    Product Type Wideband Gauge Kit
    Sub Category Instrument Panel
    26 Performance
    3145 Universal
    Warning California Proposition 65
    Warranty 12 Months - Excluding Bosch O2 Sensor
    Wire Gauge Measurement 22
    Wiring Harness Length 96
    2087 48
    Description_ABR AFR Gauge Ki
    Description_SHO X-Series OBDII AFR
    Description_INV X-SERIES WIDEBAND W/ OBD CAN
    Description_ASC FACTORY CALIBRATION RESISTOR OR FREE-AIR CAL, IT'S YOUR CHOICE!
    Description_ASC 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.
    Description_ASC WHAT IS A WIDEBAND UEGO AIR/FUEL CONTROLLER?
    Description_ASC 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.
    Description_ASC WHY USE A WIDEBAND AIR/FUEL CONTROLLER?
    Description_ASC 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.
    Description_ASC CAN I CHANGE THE AEM UEGO SENSOR'S CONNECTOR?
    Description_ASC 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.
    Description_ASC * 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.
    Description_ASC ** 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.
    Description_ASC Display Gasoline values from 8.0:1 to 20.0:1 AFR
    Description_ASC Display Lambda values from .55 to 2.00
    Description_ASC OBDII Output Gasoline values from 8.0:1 to 20.0:1 AFR
    Description_ASC OBDII Output Lambda values from .55 to 2.00
    Description_ASC 0-5V Output Gasoline values from 8.5:1 to 18.0:1 AFR (Requires Wiring)
    Description_ASC 0-5V Output Lambda values from .58 to 1.23 (Requires Wiring)
    Description_ASC 0-5V Output E85 values from 5.7:1 to 12.0:1 AFR (Requires Wiring)
    Description_ASC 0-5V Output Ethanol values from 5.2:1 to 11.0:1 AFR (Requires Wiring)
    Description_ASC 0-5V Output Methanol values from 3.75:1 to 8.0:1 AFR (Requires Wiring)
    Description_DES AEM X-Series OBDII Wideband AFR Gauge Kit
    Description_EXT OBDII Connectivity on 08-up Vehicles Only
    Description_MKT AEM's X-Series OBDII Wideband UEGO AFR Sensor Controller Gauge (PN 30-0334) provides tuners who are using piggyback tuning modules or open source software with the ability to view AFR through the factory CAN-bus stream that is output by the factory ECU, and deliver the most accurate, safe and powerful tune. The 30-0334 X-Series OBDII Wideband Gauge is validated to work with DiabloSport in Tune 3, Trinity 2, EFILive, HPTuners and DashDaq software.
    Description_MKT The X-Series Wideband AFR OBDII Gauge includes an OBDII pass-through connector and 4.9LSU sensor that can be free-air calibrated or used with the factory resistor calibration. Additional wiring for a 0-5v or RS232 Serial output can be added by the user for outputting to a data logger. This OBDII pass-through capability replaces the traditional AEMnet stream available in the 30-0300 X-Series Wideband AFR Gauge Controller.
    Description_MKT OBDII CAN-bus OUTPUT
    Description_MKT The OBDII output simulates an auxiliary ECU signal when plugged into a vehicle's OBD port, which requires a unique address from the other ECUs already on a vehicle's network. AEM's default OBDII CAN address will work with most popular vehicles and adjustments should not be necessary. However, AEM has provided OBDII address programmability through the buttons on the gauge face if a different address other than the default address is required, allowing users to program ECU #, Parameter Identification (PID), Message Identifier, and Bit Rate.
    Description_MKT PATENTED X-DIGITAL TECHNOLOGY - It's The Fastest
    Description_MKT X-Series Widebands are the fastest responding wideband air/fuel ratio controllers in independent testing against 17 other wideband UEGO air/fuel controllers.* The controller's high speed, patented, X-Digital technology (Patent 9,575,030) ensures no loss of signal fidelity and full transient response, making it able to identify the slightest fluctuations in AFR and output them in full value.
    Description_MKT WHY RESPONSE TIME MATTERS
    Description_MKT Faster response time improves wideband feedback control, and can provide a safer, more powerful and accurate tune. AEM's Wideband Controllers with X-Digital technology reduce deadtime and can improve the performance of your vehicle through more accurate AFR tuning.
    Description_FAB 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
    Description_FAB Patented X-Digital wideband technology (Patent 9,575,030)
    Description_FAB Includes Bosch 4.9LSU wideband UEGO sensor
    Description_FAB Factory calibrated resistor does not require free-air calibration, but technology allows for free-air calibration as sensor ages if user desires
    Description_FAB Compatible with vehicle/system voltages up to 16V
    Description_FAB 0-5V & RS232 output for data logging and feedback control, AEMnet (CANbus) for data logging and daisy-chaining multiple controllers up to 16 cylinders
    Description_FAB Can display AFR values in hundredths of %
    Description_FAB 52mm gauge diameter and slim 0.825" gauge depth
    Description_FAB Gauge cup depth only .200" deep
    Description_FAB Auto dimming feature
    Description_FAB User configurable display via buttons on the gauge face for changing AFR values, Lambda and O2%, and 3- or 4-digit display
    Description_FAB Black bezel and black dual faced faceplate included (gauge only, silver bezel/white gauge option sold separately, PN 30-0300-ACC)
    Description_FAB Locking connectors
    Description_ABR AFR Gauge Ki
    Description_SHO X-Series OBDII AFR
    Description_INV X-SERIES WIDEBAND W/ OBD CAN
    Description_ASC FACTORY CALIBRATION RESISTOR OR FREE-AIR CAL, IT'S YOUR CHOICE!
    Description_ASC 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.
    Description_ASC WHAT IS A WIDEBAND UEGO AIR/FUEL CONTROLLER?
    Description_ASC 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.
    Description_ASC WHY USE A WIDEBAND AIR/FUEL CONTROLLER?
    Description_ASC 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.
    Description_ASC CAN I CHANGE THE AEM UEGO SENSOR'S CONNECTOR?
    Description_ASC 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.
    Description_ASC * 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.
    Description_ASC ** 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.
    Description_ASC Display Gasoline values from 8.0:1 to 20.0:1 AFR
    Description_ASC Display Lambda values from .55 to 2.00
    Description_ASC OBDII Output Gasoline values from 8.0:1 to 20.0:1 AFR
    Description_ASC OBDII Output Lambda values from .55 to 2.00
    Description_ASC 0-5V Output Gasoline values from 8.5:1 to 18.0:1 AFR (Requires Wiring)
    Description_ASC 0-5V Output Lambda values from .58 to 1.23 (Requires Wiring)
    Description_ASC 0-5V Output E85 values from 5.7:1 to 12.0:1 AFR (Requires Wiring)
    Description_ASC 0-5V Output Ethanol values from 5.2:1 to 11.0:1 AFR (Requires Wiring)
    Description_ASC 0-5V Output Methanol values from 3.75:1 to 8.0:1 AFR (Requires Wiring)
    Description_DES AEM X-Series OBDII Wideband AFR Gauge Kit
    Description_EXT Black Bezel - Black Face
    Description_MKT AEM's X-Series OBDII Wideband UEGO AFR Sensor Controller Gauge (PN 30-0334) provides tuners who are using piggyback tuning modules or open source software with the ability to view AFR through the factory CAN-bus stream that is output by the factory ECU, and deliver the most accurate, safe and powerful tune.
    Description_MKT The 30-0334 X-Series OBDII Wideband Gauge is validated to work with DiabloSport in Tune 3, Trinity 2, EFILive, HPTuners and DashDaq software.The X-Series Wideband AFR OBDII Gauge includes an OBDII pass-through connector and 4.9LSU sensor that can be free-air calibrated or used with the factory resistor calibration.
    Description_MKT Additional wiring for a 0-5v or RS232 Serial output can be added by the user for outputting to a data logger. This OBDII pass-through capability replaces the traditional AEMnet stream available in the 30-0300 X-Series Wideband AFR Gauge Controller.OBDII CAN-bus OUTPUTThe OBDII output simulates an auxiliary ECU signal when plugged into a vehicle's OBD port, which requires a unique address from the other ECUs already on a vehicle's network.
    Description_MKT AEM's default OBDII CAN address will work with most popular vehicles and adjustments should not be necessary. However, AEM has provided OBDII address programmability through the buttons on the gauge face if a different address other than the default address is required, allowing users to program ECU #, Parameter Identification (PID), Message Identifier, and Bit Rate.
    Description_MKT PATENTED X-DIGITAL TECHNOLOGY - It's The FastestX-Series Widebands are the fastest responding wideband air/fuel ratio controllers in independent testing against 17 other wideband UEGO air/fuel controllers.* The controller's high speed, patented, X-Digital technology (Patent 9,575,030) ensures no loss of signal fidelity and full transient response, making it able to identify the slightest fluctuations in AFR and output them in full value.
    Description_MKT WHY RESPONSE TIME MATTERS - Faster response time improves wideband feedback control, and can provide a safer, more powerful and accurate tune. AEM's Wideband Controllers with X-Digital technology reduce deadtime and can improve the performance of your vehicle through more accurate AFR tuning.
    Description_FAB 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
    Description_FAB Patented X-Digital wideband technology (Patent 9,575,030)
    Description_FAB Includes Bosch 4.9LSU wideband UEGO sensor
    Description_FAB Factory calibrated resistor does not require free-air calibration, but technology allows for free-air calibration as sensor ages if user desires
    Description_FAB Compatible with vehicle/system voltages up to 16V
    Description_FAB 0-5V & RS232 output for data logging and feedback control, AEMnet (CANbus) for data logging and daisy-chaining multiple controllers up to 16 cylinders
    Description_FAB Can display AFR values in hundredths of %
    Description_FAB 52mm gauge diameter and slim 0.825" gauge depth
    Description_FAB Gauge cup depth only .200" deep
    Description_FAB Auto dimming feature
    Description_FAB User configurable display via buttons on the gauge face for changing AFR values, Lambda and O2%, and 3- or 4-digit display
    Description_FAB Black bezel and black dual faced faceplate included (gauge only, silver bezel/white gauge option sold separately, PN 30-0300-ACC)
    Description_FAB Locking connectors


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    Returns & Refunds Last Updated: April 2026

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    Questions?

    We're happy to help before, during, or after your purchase. Email: sales@berryperformancesales.com

    Berry Performance Sales reserves the right to update this policy at any time. Changes take effect immediately upon posting. It is the customer's responsibility to review the current policy at the time of purchase.

    Disclaimer

    All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

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