{"product_id":"aem-x-series-wideband-uego-air-fuel-ratio-controller-30-0300","title":"AEM X-Series Wideband UEGO Air\/Fuel Ratio Controller Gauge","description":"\u003cp align=\"justify\"\u003eThe X-Series Wideband UEGO AFR Sensor Controller Gauge (PN 30-0300) measures 2 1\/16th-inch (52mm) in diameter, and features a modern, visually striking faceplate and new seven-segment center display that is 87% larger than the 30-4110 AEM Wideband Gauges center display. This creates the perception of a larger overall gauge, but in a common 52mm size for easy mounting. Its slim depth (less than one inch overall) and ultra slim cup depth of .200-inches dramatically increases its application base and potential mounting locations.\u003c\/p\u003e\n\u003cp align=\"justify\"\u003eThe X-Series Wideband UEGO AFR Gauge has a user configurable display via buttons on gauge face that allow you to change AFR values for different fuels, Lambda or O2%, change the center display to three or four digits, perform a free-air calibration if desired as the sensor ages, and change the CAN message ID when linking multiple X-Series Inline Controllers or X-Series Controller Gauges. A black bezel and black dual-faced faceplate for air\/fuel and Lambda are included, and an optional silver faceplate with white dual-faced air\/fuel and Lambda faceplate is available (PN 30-0300-ACC, sold separately). An Auto Dimming feature is included. Locking connectors ensure a positive connection between the harnesses and gauge and a new single board design adds to the new gauges robustness.\u003c\/p\u003e\n\u003cp align=\"justify\"\u003ethe gauge includes a 0-5v and RS232 Serial Port output for feedback control and data logging, and an AEMnet (CANbus) output for data logging. AEMnet allows additional X-Series Wideband Controllers to be daisy chained together (up to 16 cylinders) for recording AFR in multiple cylinders. It supports vehicle\/system voltages up to 16V, and can be used on EFI or carbureted applications, and dynamometers in applications using gasoline, methanol, ethanol, Diesel, propane and CNG.\u003cmeta charset=\"UTF-8\"\u003e\u003c\/p\u003e\n\u003cp align=\"justify\"\u003ePart #: (30-0300)\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eX-Series Wideband UEGO AFR Controller Gauge were fastest responding wideband air\/fuel ratio controllers in an independent test vs. 17 competitor wideband AFR controllers\u003c\/li\u003e\n\u003cli\u003eIncludes Bosch 4.9LSU wideband UEGO sensor\u003c\/li\u003e\n\u003cli\u003eFactory calibrated resistor does not require free-air calibration, but technology allows for free-air calibration as sensor ages if user desires\u003c\/li\u003e\n\u003cli\u003eCompatible with vehicle\/system voltages up to 16V\u003c\/li\u003e\n\u003cli\u003e0-5V \u0026amp; RS232 output for data logging and feedback control, AEMnet (CANbus) for data logging and daisy-chaining multiple controllers up to 16 cylinders\u003c\/li\u003e\n\u003cli\u003eCan display AFR values in hundredths of %\u003c\/li\u003e\n\u003cli\u003e52mm gauge diameter and slim 0.825 gauge depth\u003c\/li\u003e\n\u003cli\u003eGauge cup depth only .200 deep!\u003c\/li\u003e\n\u003cli\u003eAuto dimming feature\u003c\/li\u003e\n\u003cli\u003eUser configurable display via buttons on the gauge face for changing AFR values, Lambda and O2%, and 3- or 4-digit display\u003c\/li\u003e\n\u003cli\u003eBlack bezel and black dual faced faceplate included (gauge only, silver bezel\/white gauge option sold separately, PN 30-0300-ACC)\u003c\/li\u003e\n\u003cli\u003eLocking connectors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAFR VALUE RANGE BY FUEL TYPES:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDisplay Gasoline values from 8.0:1 to 20.0:1 AFR\u003c\/li\u003e\n\u003cli\u003eDisplay Lambda values from .55 to 2.00\u003c\/li\u003e\n\u003cli\u003e0-5V Output Gasoline values from 8.5:1 to 18.0:1 AFR\u003c\/li\u003e\n\u003cli\u003eCANbus Output Gasoline values from 8.0:1 to 20.0:1 AFR\u003c\/li\u003e\n\u003cli\u003eCANbus Output Lambda values from .55 to 2.00\u003c\/li\u003e\n\u003cli\u003e0-5V Output Lambda values from .58 to 1.23\u003c\/li\u003e\n\u003cli\u003e0-5V Output E85 values from 5.7:1 to 12.0:1 AFR\u003c\/li\u003e\n\u003cli\u003e0-5V Output Ethanol values from 5.2:1 to 11.0:1 AFR\u003c\/li\u003e\n\u003cli\u003e0-5V Output Methanol values from 3.75:1 to 8.0:1 AFR\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal fitment \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Carno Racing","offers":[{"title":"Default Title","offer_id":44095037538355,"sku":null,"price":225.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/8276\/3827\/files\/Screenshot2026-03-05at3.53.08PM.png?v=1772747829","url":"https:\/\/carnoracing.com\/products\/aem-x-series-wideband-uego-air-fuel-ratio-controller-30-0300","provider":"Carno Racing","version":"1.0","type":"link"}