AEM Inline Wideband AFR Controller X-series Maintenance No Install- You are purchasing

No Install- You are purchasing a new S300 board in box

100% digital technology that makes them the fastest responding wideband air/fuel ratio controllers in independent testing*

one wall power adapter*

change the center display to three or four digits

Includes: 1000 PSIg Stainless Sensor

AEM Inline Wideband AFR Controller X-series Maintenance No Install- You are purchasingAEMs X Series Inline Wideband UEGO Air Fuel Ratio Controllers are built upon unique, patented, 100% digital technology that makes them the fastest responding wideband air fuel ratio controllers in independent testing*. The X Series Wideband UEGO Air Fuel Ratio Controller replaces the popular 30 2310 Inline Controller. X Series Inline Wideband UEGO Controller features a weather resistant, low profile enclosure with status LEDs. It is ideal for users