rusEFI

rusEFI is the most advanced fully open source engine management system on the planet.
The rusEFI project has developed engine management systems capable of meeting the demands of advanced modern road and motorsport engines while still providing full access to the software and hardware. This potent combination means an ECU that you truly control, auditable, repairable and most importantly, modifiable. 

As a project rusEFI strives to deliver the highest standards of reliability and quality ever seen in an open source automotive project.

All official rusEFI hardware is designed and tested to industry standards and uses genuine automotive grade components wherever possible, this results in hardware that will run your engine fault free for years.
The software of the project is the work of nearly 10 years of evolution and is now maintained by a team of highly skilled programmers from a broad range of industries.