Powercomander: We have always used BD box, but did last week installed a PC on A dragon 700. The PC does it right on the dragon. Will have ha PC on my next sled for sure. Like the ability to take/add fuel whwerever I want in the rpm range.
About the KOSO O2, we have ran 4 sleds this winter whit it. We have tried several locations for it, one pipe is filled whit holes by know, and we ended up whit having it in the Y-Pipe. That`s seems to be the best location. As warmer it`s around the sensor, as better it seems to work. Tried to move it longer out in the main pipe, and it just get worse. Also installed a powerswitch on two sleds. If it`s not turned on after heat cycle, just kill the power to it. Take a couple of pulls at wot tho get some pipe temp, then power it again, and then it works.
And the O2 2-stroke sensor adapter is just waste of money. None of the sleds manage to get the koso work whit the adapter installed.