Well I made the right decision not to take those loud cans, don't get me wrong I'm gutted about not gettin em, but I would have had to go on a rollin road and would have needed to change jets coz the bird won't run right with race cans on.
So its gonna be a long time before I fit them.
And it does give you an extra 1 to 3 BHP, so if anybody has a carbed bird and some spare dosh, they should invest.