Originally posted by AlphaTech
The really loud ones are using open pipes (also referred to as drag pipes) which don't have any baffles in them. I don't have that, the after market pipes I had installed onto the new Harley do have baffles in them (believe the max db rating on the pipes are 106, which is the legal limit). Some states have db ratings that they enforce, but most often they don't bother. The federal limit is 106db, and you CAN get pulled over if you are excessively loud. I remember hearing custom bikes going down one of the main streets in Savannah, GA while at college, and they had the open pipes installed. Even for me, those are way too loud.