Part of the challenge that has always tagged along with standalone engine monitor installations is placing the control head in a useful location on the panel. Since engine and fuel data is critical, you really want the monitor in your primary scan. While that may be easier with smaller displays, it means major panel rework for larger systems.
Garmin’s Engine Indication System, or EIS, worked we’ll in the G3X series for experimentals. For the certified world, its compatibility with a variety of Garmin retrofit displays opens the interface to a wide variety of panels and budgets. Still, planning an EIS retrofit can be tricky, especially if you haven’t decided on a display configuration. Here’s a primer to help with the planning.