{"product_id":"aem-x-series-wideband-afr-controller-52mm-compact-gauge-with-bosch-4-9lsu-and-can-obd-ii","title":"AEM X-Series Wideband AFR Controller 52mm Compact Gauge with Bosch 4.9LSU and CAN\/OBD-II","description":"\u003cstrong\u003eThe AEM 30-0334 X-Series Wideband AFR Controller is a compact, fast-response UEGO gauge and controller that measures and reports precise air\/fuel ratios with Bosch 4.9LSU sensor and modern vehicle connectivity.\u003c\/strong\u003e\n\n\u003cp\u003eThis instrument combines AEM's patented X-Digital wideband technology with a compact 52mm gauge package and multiple data outputs to give tuners, racers, and advanced DIYers accurate, fast air\/fuel readings and seamless integration into modern vehicle networks. It arrives factory-calibrated so most installations need no free-air setup, yet it still supports recalibration as the sensor ages. The controller is designed for both standalone logging\/control and for daisy-chaining across multi-cylinder setups.\u003c\/p\u003e\n\n\u003ch3\u003eHow quickly and accurately will this unit report AFR readings?\u003c\/h3\u003e\n\u003cp\u003eThe X-Series unit uses AEM's X-Digital patented algorithm and the Bosch 4.9LSU sensor for fast, stable measurements. In independent comparisons it was one of the quickest-responding wideband controllers, making it a strong choice where rapid AFR changes matter.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePatented X-Digital wideband processing for speed and stability\u003c\/li\u003e\n  \u003cli\u003eIncludes Bosch 4.9LSU sensor for reliable sensing\u003c\/li\u003e\n  \u003cli\u003eDisplays AFR to hundredths for fine resolution\u003c\/li\u003e\n  \u003cli\u003eFast response suitable for transient tuning and closed-loop control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat connectivity and outputs does it support for tuning and logging?\u003c\/h3\u003e\n\u003cp\u003eThe controller offers multiple output options so you can integrate it with dataloggers, ECUs, or OBD-II\/CAN systems on newer vehicles. Its OBD-II\/CAN output and AEMnet capability allow it to communicate with 2008-and-newer vehicles and to chain multiple controllers.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOBD-II\/CAN compatible with many 2008+ vehicles\u003c\/li\u003e\n  \u003cli\u003e0–5V analog and RS232 digital outputs for logging and feedback\u003c\/li\u003e\n  \u003cli\u003eAEMnet (CANbus) supports daisy-chaining up to 16 cylinder controllers\u003c\/li\u003e\n  \u003cli\u003eVehicle\/system voltage compatibility up to 16V\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs installation and calibration difficult for everyday users?\u003c\/h3\u003e\n\u003cp\u003eThe gauge ships with a factory-calibrated resistor so most users won’t need to perform a free-air calibration during initial installation. Advanced users still have the option to recalibrate later as the sensor ages, and the compact dimensions simplify mounting in tight dashboards.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFactory-calibrated resistor reduces setup steps\u003c\/li\u003e\n  \u003cli\u003eSupports user free-air calibration if desired in the future\u003c\/li\u003e\n  \u003cli\u003eCompact 52mm diameter and shallow 0.825\" depth for tight mounting\u003c\/li\u003e\n  \u003cli\u003eGauge cup depth of only 0.200\" keeps mounting shallow and neat\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the physical size and display benefit installations?\u003c\/h3\u003e\n\u003cp\u003eSmall overall dimensions make the X-Series ideal where space is limited, while the high-resolution display provides precise AFR numbers without a bulky housing. This combination is useful for custom dashboards, roll cages, or crowded dash panels.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e52mm face fits common gauge pods and mounts\u003c\/li\u003e\n  \u003cli\u003eSlim 0.825\" gauge depth requires minimal clearance behind the panel\u003c\/li\u003e\n  \u003cli\u003eShallow gauge cup (0.200\") for flush mounting options\u003c\/li\u003e\n  \u003cli\u003ePrecision readout suitable for tuning and troubleshooting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Tuners, racers, and serious DIY enthusiasts who need a fast, compact, and network-capable wideband AFR controller will benefit most from the AEM 30-0334. It fits installations that demand tight packaging but require accurate, rapid AFR feedback and flexible outputs for datalogging or ECU integration. Hobbyists wanting a reliable factory-calibrated unit with the option to recalibrate later will also find this model practical.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the AEM 30-0334 require calibration after installation?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No—It ships factory-calibrated and typically needs no free-air calibration, though user recalibration is available as the sensor ages.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can this controller connect to modern vehicle networks?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—It supports OBD-II\/CAN for many 2008+ vehicles, plus AEMnet for daisy-chaining multiple controllers.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"AEM","offers":[{"title":"Default Title","offer_id":48080349921438,"sku":"B07467LFHZ","price":417.5,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/aem-30-0334-front-gauge-face.jpg?v=1785780534","url":"https:\/\/northtrailauto.ca\/products\/aem-x-series-wideband-afr-controller-52mm-compact-gauge-with-bosch-4-9lsu-and-can-obd-ii","provider":"North Trail Auto","version":"1.0","type":"link"}