Hi Rick:
___Follow the
Motorcycle emissions limits and fuel economy estimates link in the review for the same. Fortunately, even the small bikes will be going to Fuel Injection within two to three years but with the EPA/CARB specs in place, do not expect TWC’s on all bikes for some time to come due to expense. The larger bikes are including them but are still held to the 1.4g/km (pre-08) and .8 g/km (08 looking forward) overall. Until that maximum spec comes down to .1 like automobiles, expect a bike's smog forming emissions to stay sky high by comparison
___Good Luck
___Wayne