Hello, I am the so called "Heizer" from the German forum - its a synonym for fast driving.
Due to my favorite way of driving I recognize that i am destroying the silencers at the front edge of the bulb. Therefore I am going to replace them by Norton Commande Interstate mufflers and new exhaust tubes. This change may reduce or eliminate the interference pipe. As far as I know, this pipe is useful for the top end power. Is somebody around with specific experience about the performance after changing the silencer and tubes ?