RE: supercharger
Emissions have to do with pollution about the same thing. It is what is being put in the air either way you say it. If you look you will see that there are more 4-cycle motocross bikes then there ever has been because 2 cycles are on their way out do to emissions or what ever you want to call it. I agree with Frost how can you force more air and fuel in a motor like we run when both the exhaust and intake port are open at the same time. All you would be doing is wasting more fuel as it would go straight throw an out the pipe.