Boomer, thanks for the tip on after market exhaust for the RSV. You appear adamant on not having to rejet, but did your bike require adjustment of the fuel/air mixture on the carbs? You say LOUD. Are they obnoxiously loud or just a good throaty roar? Would appreciate a response. retldousn@earthlink.net (a retired MCPO, CWO4 and LT, submarine type.)