I don't pay much attention to newshiney, but apparently the epa HAS put in regulations for motorcycles and discusses fuel injection and catalytic converters and etc.
It would be good to know if the 5x by percentage of exhaust flow issue is already being corrected and how a 2010+ regulation bike would compare both in percentage and absolute pollution.
http://www.epa.gov/oms/regs/roadbike/420f03045.pdf