Why on earth would you want to dampen that lovely note? i just installed 8 inch Delkevic race cans on mine and love it..... nore more close calls with ducks, geese and dear. drilled pot the factorys on my 07 with a 18'' drill bit first. sounded like a 2 stroke. BraapIs there anyway to dampen the noise on the exhaust of the Z1000?