I met up with Justin in Togwotee last Wed. He was trying a couple different maps, that he was working on to solve these wierd issues. We talked for a few hours the night before he looked at my sled and discussed the way the ECM from polaris has many factors to calculate which map it uses in any particular condition. So as you can imagine with multiplle maps this process has been quite an under taking for Justin. Some of the stuff he was saying was blowing me away how polaris ECM's control the sled. Throttle position, load, ambient temp, pipe temp, EGT temp, RPM, and exuast valve position, and to make it worse, every combination of these items or some of them or all of them. Plus I'm sure there is even more that tiny little computer is doing to get the optimal condition for the sled to run the way its intended to run. Then we boost these things and it magnifies these conditions. Any way, in the am he had me go warm my sled up and I went out into a meadow with about a foot of fluffy snow (semi-setup) and pulled a couple long pulls and mine fall on its face at the end of the second run. Checking all the gauges I was 8100 rpm, 7psi, and 12.2 afr. The second run it was a bit fatter ran in the low 11's before it fell on its face. Came back to Justins trailer and he installed a map for me to try. I started the sled and went back to the same location in the meadow and made a few pulls just like the previous ones before the map change. 8250 rpm, 7psi, and 12.7 afr. Butt of the pants faster acceleration, seemed a bit crisper as well. We rode really steep tough terrain that afternoon and it bogged one time which to our best guess was right when the exauhst valve where closing because I let off and then immediatly hit it again and the hesitation was delay of the valve going closed and back to open. I can say for the next 3 days riding (140 miles of boondocking) it never happened again. One thing I really noticed was how freaking happy i was for all three of those days. I know one of the guys who was there and had a great running sled from the get go, which 90% of the kits he sold are running without problems tried the new map and his ran worse so if your sled is able to climb and doesnt bog or goat then leave your map alone. I will let Corey chime in as well on the map he was testing but from the sounds of it they hit a home run and boy let me say I am one happy customer. It was great meeting them especially Jim he is a great dude who knows his stuff. If you need a favor from Jim he accepts toothpaste for payment. LMAO (his buddies will like that)