if you just want to make noise, why not just remove your stock silencer and call it done? that would definetely be loud, stupid, but loud. they already have two stroke pretty much on there last leg, why would you want to help vanish the 4 strokes too? I thought it was about making useable power, not making unneeded noise. The w/b slip on is one of the quietest out there, yet it has a better increase than just about all others, you could add a few disks to what you have and get a slight bit louder, and improve your bikes performance.