(My Grammer sucks so excuse any miss types or other inperfections) First of all i would like to give Credit to hellvetica For pointing me to this Slip on! Now that i got that out of the way, install for the slip on total time to install it took maybe 20min, you will need two people tho to do this unless you have a stand for your bike because you do have to push hard and the bike will move unless someone is holding it. As for the after affect the sound is amazing its has a deep idle sound and gets higher on trottle. IF your looking to NOT stand out this is not one for you like Hellvetica said this is a loud muff. It looks Great and sound great...as for the preformace it could be just in my head but i did feel a great deal of diffrence especialy in the mid range.... but with all this said i took a be4 and after vid that i will post later (btw is there away to put vid up or can i just past link) Thanks ....comments welcome