Hi. just wanted to prepare you for something, was recently with my GPz 600 at TÜv. As the TÜV examiner said I would still be lucky, from 1.1.2006 all motowheels from bj 89 have to be examined for exhaust behavior AND noise behavior, well I thought again great off!!!!!!!!! Then it is probably bye bye with carburettor tuning etc. that also influences the exhaust behavior. People this is no joke, I was stinged like in front of the head.