Good question crispey - the new Harleys get fitted with blow pipes that would give an elephant a heart attack but they seem legal ???? Cars however don't get the same discretion, I'm not sure what the legal limit is for cars but around 70 -80db I seem to recall. Mine certainly give out more that that and it's street legal.
Yeah, same here: after EURO 4, they even seem to have gotten louder still. We must have some HOG representatives in parliament in Berlin.