Sound:Mighty, cool but still not too loud. Also seems noise is going "away" from the bike better tha original pipes
Appearance: biased, ofcourse, but looks great and douesnt stick out on the sides as much as original.
Quality: Had a fastener to the heatshields come off, but easily welded back, but everything just seems rock solid.
MAP: 20054, and I have
no problems with backfiering and/or popping.
Pics: some here