22. The handheld also features an advanced setup tab with additional functions such as controlling the two optional fan control circuits, accelerator pump squirt, power valve enrichment percentages, and more. The built-in dashboard feature allows you to monitor, in real time, all parameters of your EFI and your engine (air/fuel, timing, rpm, etc.). The handheld is also how you update the system (with the included micro SD card). It can be unplugged from the control module once programming is completed.