When I had my Harley I took it back to complain how gutless it was, I was told all would be well after they "tuned" the mufflers at the first service. They were right, it was louder and had way more power. They just took a large steel bar longer than the silencer and smashed it out to straight through. Not much science. Apparently to get these big twins past noise laws they have to strangle them with over the top silencers. 😂
