For those following at home...CANBUS can give you distinct advantages over the pedestrian OBD II. It allows for access to more stuff (more data/more control/more risk of breaking crap) and it is faster (well it should be, it could be limited by priority bytes tagged on some messages).
There is also SSM. SSM is subaru's specific proprietary stuff. (I believe we are on SSM III now?)
Buut some people have gotten into ssm and gotten data out of it. Most of their code is closed. Some, like this:
https://github.com/PiMonitor/PiMonitor is open.
He seems to have figured out some of the SSM stuff:
https://github.com/PiMonitor/PiMonit...ata/cu_ids.txt
According to this SSMIII (what we have) is CANBUS based -
http://www.rs25.com/forums/f72/t1651...stigation.html'
More stuff
http://subdiesel.wordpress.com/gener.../ssm2-via-can/