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...you are running high amounts of boost or if you are using a fuel controller, you will want to install the AEM UEGO. The AEM UEGO monitors your cars air/fuel curve. The 30-4110 AEM wideband is a replacement for the well renowned AEM UEGO 30-4100....
...Fabricated with two (2) O2 Sensor bungs to conform to the OEM fitment and OBD-II standards...Note: Although O2 Sensor bungs are provided, an O2 Simulator may be required to prevent any Check-Engine lights...