....it was not my first move to settle the problem. I went to his front door and introduced myself and asked him if he might at least ride a bit slower and try to "be nice". I offered to give him "dealer cost" for any exhaust as long as he kept some sort of baffles in the pipes.....even "performance" baffles are a bit easier on the ears than open pipes...He just told me to "F" off and slammed the door.
So I moved on to "plan B".
Not only that, put performance pipes with baffles with outperform straight pipes. You need some reversion, even if it's just a set of power cones on the end.