Our UltraSky EMS has been developed to be the highest quality electronic engine management system available for high-performance Lycoming aircraft engines.


As of January 2017, we are currently only offering this system for installation on engine assemblies that we are producing, this gives us the ability to fully calibrate the system in one of our engine test cells prior to shipment.



 The UltraSky Electronic Engine Managment System (EMS) has been developed for use in high-performance Lycoming aircraft engines. Our system incorporates many unique features that increase the performance, safety, and longevity of the engine. Below is a listing of some of these features:


  • Complete calibration. The fuel and ignition tables are fully calibrated according to your engine configuration, airframe requirements, and intended use to provide the optimal settings during all engine operations and situations. This means that there is no trade-off between optimal high-power operation, efficient cruise, and smooth idle.

  • Reduced pilot workload. Our system lets the pilot focus more on flying and less on managing the engine. From automatic adjustments based on altitude and temperature, to easier starts and the ability to safely fly at a reduced RPM on final, we have done our best to make flying easier and more enjoyable.


  • Stable ignition timing. Unlike magnetos that suffer from timing scatter due to both internal and external drive clearances, the electronic systems maintain accurate and consistent timing events throughout all RPM, temperature, load points, and transitions.


  • Timed electronic port fuel injection. Utilizing a dedicated fuel injector for each cylinder that is timed within the engine's power cycle, fueling is significantly more controlled than older types of mechanical fuel injection. This means that the proper amount of fuel is injected without waste. So not only is cylinder balance improved, but so is cycle consistency.  Our fuel injectors are supported by specially designed fuel rails that are manufactured using our vacuum-brazing process to produce a durable and leak free assembly.


  • Strong ignition output. With a powerful coil output and a duration of more than 3ms, leaner fuel mixture settings can be maintained when in reduced-power (cruise) flight and during ground operation. The increased output also minimizes the chance of a misfire during high-power operation. Even further, we are able to increase the ignition output during cranking for easier starting.


  • High-Flow Throttle Valve Assembly. We design, test, and manufacture our throttle assemblies in-house for proper fit and function - from pouring the raw castings to final machining and assembly - ours valves are optimized for performance Lycoming installations.  Our high-flow assemblies are significantly lighter and shorter than standard fuel servos for easy fitment.  A unique feature of our throttle housing is the tapered bore, this allows us to place the pivoting throttle plate in a larger diameter section so that it presents less restriction to airflow.


  • Enhanced engine safety. The system can automatically compensate for under/over-voltage situations, as well as when abnormally high or low ambient temperatures are encountered. The system also includes a rev-limit feature that will immediately reduce engine power in an emergency situation such as a propeller or governor failure.


  • Durable control, peripherals, and wiring. The passively-cooled control unit is designed to withstand substantial shock loads and is water resistant. The wiring harnesses are manufactured using the highest quality components and proven techniques to greatly increase the durability of the harness assemblies, using strain-relieved and flame-resistant wiring.



  • Simple data viewing and recording. Bluetooth integration with RealDash application for Android/IOS/Windows devices makes data analysis a simple task. You can easily save data recordings as a standard .csv file for analysis at home or upload to our data server for in-depth inspections. We can even remotely view your engine data in real-time from anywhere in the world (as long as the aircraft is within cellular or wifi network range).


  • A complete system. We strive to provide everything possible needed to install the system onto your engine. This includes completed harnesses, switches, installation hardware, filters, and more. According to your installation, you will add/modify the battery setup and fuel plumbing – which we provide thorough recommendations and instructions for.



For more information on the system, please see the Installation/Operation Manual linked below:

UltraSky EMS - Electronic Engine Management System Instructions







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