stock cam, just a bigger jug. and the new jug is so high compression, i actually had to make a diy crankcase expansion chamber via the dipstick hole so the starter could crank it over.
after tearing into it today, and checking the valves, timing, and plug (which was slightly on the black side actually), i think i found the problem. the past few tanks of gas, ive been burning what was left of the 2 stroke gas from my snowblower. (50:1 mix) looked up the tailpipe with a flashlight and lo-and-behold there was fiberglass matte in there! i cant take the muffler apart, because i dont have any way to re- weld it, so i cut a few slits with the grinder near the end of the pipe. went for a short 5 mile ride, and not a single chug and it buried the needle again no problems.
my theory is that the matte absorbed the oil from the 2 stroke gas and caused a potato in the tailpipe type situation.
ill post back if i have any other issues, or if they return.
here is a video i took with the exhaust off. too bad i couldnt leave it off. sounded awesome. haha
thanks alot guys!
6000k headlights, LED license plate fog lights, tinted taillights and to top it all off, 2 12" air horns!
the gf:'00impy 3.8, every option. COTM July 2013