But the future is coming and some is here now: new regulations and cities we can't even ride in... So let's discuss what we CAN do and I know it will be not much. But at least SOMETHING times all of us that do what we can could help and we all need to do our share.

1) Cutting down on the pollution a 2T emits? Are there tuning or component changes that can "clean up" the smoke 10% or even more. I don't know, but I could lose some power to burn cleaner and not feel hurt. Running temperature to shoot for matter here, like in a car? I know ppl rejet & swap muffs on newer bikes to get that "old" power back.
2) Improving gas mileage? Again how to tune and tips on how to drive to get the HIGHEST average MPG , what should I do? Motor being newer or fresher w/ all the internals all snugger and less leakage, a big difference here?
3) The elephant in the room, or should I say cat? If I fish my cat muff out of the trash, what difference will it make? How much cleaner is my smoke and what % of my power is now gone?
It's not like any gov't bureau is gonna change any rules if 10% of all scooterists worked on improvements and each wound up w/ about 10% improvement let's say, but I just wanna know which way to start leaning for when gas hits $50 a quart 50 years from now and I wear an oxygen tank to go outside.