The Universal 12 Position Trim Pot is for use on virtually any Engine Management System, such as the AEM EMS. Use the Trim Pot to adjust a number of trims, including ignition timing, fuel, boost, etc. The Universal 12 Position Trim Pot includes: 12 Position Trim Pot with Flying Lead, 2 Brushed Silver Trim Position Decals with ranges from -5 to 6 and 0 to 11, Blue/Red/Black AEM Logo Knob Decals & Blue/Red/Black Colored Knob Decals. Click here for more AEM sensors and connectors