CA emmisions are much more stringent than the rest of the country, so vehicles in CA require additional equipment from the factory. This includes motorcycles.

What you are looking at is a purge system designed to catch any unburned fuel vapors before they are released into the air. Long story short, the whole thing can be removed and just follow the regular instructions for the clean air modification. Simply remove the pair valveq and replace with a "T" and run that line to the crankcase breather on top of the rear case.

Hope that helps some.