In the market for one of these bikes. Asked around - am in the CNX area - about how loud the various systems are compared to stock. Only answer I get is 'Much more Loud' The ones I have heard passing me have all been to loud for my taste - can not imagine hours spent in the saddle listening to that racket. Any recommendations for a slip-on or a full system which boosts power while being quiet ? Do not expect to be as quiet as stock but not obnoxious. Also plan on fitting CBR300 wheels. Thanks.