I would really love to see the AMA step in and enforce some sort of noise restriction on all bikes, 2 or 4 stroke. The way I look at it, this will create greater R & D into pipe construction so we can have fast AND quiet bikes (I hope) and keep the spoiled brat with a new 4 stroke, a small neighborhood and a 600 dollar pipe that makes his bike sound like the space shuttle launching from pissing everybody off and closing my riding areas. I don't mind the loud noise myself, wouldn't ever want to lose ponies for decibels, but that's the reality of keeping our riding areas.