The PGMFI project has as its goal total understanding of the computerized systems such as ECUs, ABS controllers and other devices present in Honda vehicles. Currently, the Non-Commercial-Sharealike license is reccomended for all releases.
Ruby Inline's 13+ releases has been fully migrated to http://rubyforge.org/projects/rubyinline/ Please go there for more information. It just seems to work better over there. :/ (just click home page above)