AEM Wideband AFR Gauge X-Series Expansion Modules and return shipping of your

and return shipping of your ECU

Electrical Load Detector

Check Engine Light

Already have a boost controller setup

AEM Wideband AFR Gauge X-Series Expansion Modules and return shipping of yourAEMs X Series Wideband UEGO Air Fuel Ratio Sensor Controller Gauges are built upon unique, patented 100% Digital technology (Patent 9,575,030) that makes them the fastest responding wideband air fuel ratio controllers in independent testing*. The 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%