HOLY CRAP!! This mod is Freekn sick! I took it on last night. Very easy provided you have a dremel and long/skinny enough Allens to remove the velocity stacks. Total project took about 1 1/2 hours. This morning I rode about 90 miles and I have to say it is well worth the time and effort. The throttle response is VERY noticeably better and it doesn't seem to bog as bad around the 4k-5k range. I also have an Akrapovic slip-on and PC5 map. The bike seems soooo much more playful. The sound of the bike is noticeably different as well, but only slightly. It sounds a little more throaty on acceleration, thats about it. As far as fuel consumption being bad, it doesn't seem any worse, but I can imagine its actually the rider creating the consumption issue now! lol.