They sound like a drummer playing cello with a fried turkey leg in the rain. And farting into a bassoon.
Yes you should go ahead and get an open flow air filter at least and rejet.

I have no faith in human perfectability. I think that human exertion will have no appreciable effect upon humanity. Man is now only more active - not more happy - nor more wise, than he was 6000 years ago. Edgar Allan Poe