Look at all the Freedom loving Dont tread on me, smaller government, less intrusive restrictions to liberty, Constitutionalists defend the larger government, more intrusive, restriction on someone elses freedoms and liberty when it suits them! Amazing.
With freedom comes responsibility - that is conservative. Your current view is that of a libertine. I'm free to do as I will, screw the rest of you. The libertines abuse the freedom, then the busy-bodies want to take that freedom away from everyone. You want loud pipes, fine, idle in stopped traffic, idle down the neighborhood streets. Open it up on the highway.
There's a biker who lives in a neighborhood near mine (aside from the three I already mentioned in my neighborhood). I know he has loud pipes, but he's good about it in residential areas, idles down the neighborhood roads, accelerates reasonably, and keeps the noise down where folks are sleeping - I hear him because he's louder than most traffic, but he's still being a good neighbor.
I'll take him any day over a clapped out 4-banger or a jack-ass with a "look-at-me-I'm-important" attitude.