Component Information and Basic Programming

Last Update Dec. 31/17

This page shows you some of the basic SDS components, sizes and a few of the programmer windows for informational purposes


This is the dual ECU which needs to be mounted in the cabin area. Size is 8.5 X 3.875 X 1.75 inches. This unit has dual circuit boards for redundancy and runs the fuel injection and ignition.


This is the dual fuel pump module, usually mounted horizontally on the floor of the aircraft. Size is 11 X 4 X 1.75 inches. Usually on one pump is used in flight. Internal check valves in the pump outlets prevent backflow when only one pump is on.


4 cylinder coil pack and mount. These replace the magnetos. Most dual plug aircraft engines will use 2 of these units, one for each set of spark plugs. They mount into the original magneto holes. Alternate mounts are available.


Thread-in injector mounts screw into the original 1/8NPT injector holes in the tops of the cylinders. Plumb to the fuel block with -3 braided hoses supplied with the kit.


Mixture knob replaces the conventional mixture control. Primarily used for leaning the engine in cruise. We recommend this be mounted high in the panel so it cannot be easily bumped.


Programmer mounts into a standard 3 1/8 panel hole. Gives you 4 gauge modes and allows you to program all aspects of the EFI and ignition systems. Dimmable backlit display for night flying.


This shows the programmer in the RPM Fuel window at 2100 rpm and a fuel balue of 165. To richen the mixture at 2100 rpm, use the + buttons to increase the value.


Programmer in the MAP Fuel window at 19 inches with a fuel value of 84. To lean the engine at this manifold pressure, use the - buttons to decrease the value.


Programmer in RPM Ignition window at 2400 rpm and 26 degrees of timing. You can use the + or - buttons to increment or decrement the timing to your desired value.


One of the fuel trim windows, showing #2 cylinder with 6% more fuel added. You can trim fuel +/- 10% to individual cylinders in flight in these windows.