Constant awarness of your fuel status is fundamental to safe flying. With electronic fuel injected engines, the Electronic Fuel Injection System Monitor (EFISM) provides timely information on basic fuel factors: Fuel Flow, Fuel Used, Fuel Remaining Air/Fuel Ratio and Time Remaining as well as establish alarm levels to provide notification.  The monitor does not require expensive Fuel Flow tranducers to provide this information nor any connection to the fuel pumbing.

"Ed's EFI companion is a must-have that really rounded out my installation. It allowed me to finally fine tune my mixture map, dramatically improving the smoothness at idle. It has also helped me balance my injectors better than ever before. The fuel totalizer is the icing on the cake that, along with its many features, has allowed me to fly longer distances with greater confidence and always be on top of my fuel usage and reserves. Thanks for a great product Ed!" -Dave Leonard, Turbo Rotary RV-6