I went from a hindle hight mount to the Arata High mount. The first thing that I noticed, besides quality, is how much better this exhaust sounds!! I think this is probably the best sounding exhaust that I have heard thus far. The power is difficult for me to really say that it is better. That is probably because I am still running the Hindle map that I had made, but I am on my way to my office to get my laptop and load Dan Kyle's map.. Some time this week I will be putting the bike on they dyno and will post the charts.