Was a little concerned when purchasing because I wasn’t buying the Cobra Fi2000R, but decided to try it anyway. Installation was fairly straight forward, but one of the bolts wasn’t threaded properly, so I went with the factory bolt instead. First thing I noticed was the sound; it gave the bike a deeper rumble, very nice, but where the PowerFlo shined for me is in performance. Man oh man did I see a performance boost. This product really works great on my Honda Stateline.