I am not happy with the update on mine at all, I rode yesterday for the first time this year. First off my sled never pulled rpms no matter what I did last year, but never had the hesitation or bog that everyone talked about. But now this first ride this year after there fix it has a hesitation or studder right off idle, and a midrange flat spot that takes a second or two to pull through. The engine makes way less top end power still will not even come close to pulling r's. If you shut it off for a couple minutes and then start it and take off wide open it will only pull 7600-7700 rpms then after a couple more back to back runs it will pull 8100-8150, this is on the flat in tracks. When you start it it will occasionaly backfire also. I am at a loss not sure what to do, along with the update I installed the slp single setup, high flow airhorn, geared down to 2.27( maybe to low not sure yet, just trying) and adjusted the tps, it was off a little. The tps was reading .760 with butterflies closed, idle screw backed out all the way. I set it to .700, per polaris specs. The clutching is pretty much back to stock except I am running 68 gram slp mtx weights empty no rivets, and derlin washers in the secondary. Helix in the 40 deg. position and stock springs in the primary and secondary. I wish sombody could help me get this figured out as I love the sled and dont want to get rid of it. I just want it to pull smooth from idle to wot, and pull 8350 rpm min. I am tempted to take the 5 1/2 hour drive to carls cylcle and drop it off, then tell them I will pick it up when it runs right.
