The theoretical efficiency gain appears to be greater than the stated 14%. The article cites a video [1] which in turn cites 49% vs 63% maximum theoretical ther

The theoretical efficiency gain appears to be greater than the stated 14%. The article cites a video [1] which in turn cites 49% vs 63% maximum theoretical thermal efficiency for a traditional engine and for the Entry Ignition engine, respectively. That makes it a 14 percentage point increase which is 29% increase in efficiency. [1] https://www.youtube.com/watch?v=oiUnqlGzLw8 https://www.youtube.com/watch?v=oiUnqlGzLw8