Ok I'll bite... What is meant in this case by Megasquirt being "Non-Open Source"? I can change absolutely anything I want in any file I want and if it is beyond my scope James C. has been more than happy to help me out and code a special INI file for me to make things work. This makes me feel that saying megasquirt is "Closed Source" at least in the context I have always used it in, is an invalid and incorrect statement.
With that said this system seems very barbaric/raw in it's current state (based off the article) of being and wouldn't be able to hold a candle against even a basic MS2 system which is about $280 and has a whole community of support, note that this includes an on-board 2.5BAR MAP sensor and multiple I/Os and comes with every singe piece you would need to make it work as well as very well defined assembly instructions.
This system would have to be nearly free at this point in time for anyone to consider trying to use it.
,Dan