Finished the gearing upgrade about a month ago, pretty simple upgrade. While in the primary went ahead and installed the Harley auto-tensioner. I know I am probably going to get flamed on this one but the gearing is just OK in my opinion. I put several 50 and 100 mile trips on but thought that I needed some extended riding to get the full advantage. This week end I put about 300 on in one day and it was still just OK. The only way I know to describe it is when I first did my build I put a canned map in to get to the 500 mark for dyno work. After the custom map dropped in it was a lot "crisper" throttle responce. Thats kinda how this is. It keeps you in a little sweeter spot, but nothing that is life changing or even saying wow. Maybe its because I have a large lift cam, or maybe I just always tack mine at take off when we are up in the mountains on long lonely stretches of highway? I think the auto tensioner was the cooler investment, lot smoother shifting, still not the rice click, click, click- but no more clunk. I only post this so if someone has other ideas of where to put money, I would go for a custom map, or something else, but hey its only $300.00.