let me just say the BB was a great way to make a 146 XP boogy !!!
BCAV is a big guy and he got everywhere the 163's got. sure a xm 154 with a 130lb rider can out climb him, but the fun he and I had in the tree's/creeks was insane. the sled ran flawlessly all week, and how many guys can say that about an older sled ???
the power it makes it orsum. if your not going to upgrade your sled but want more power, this seems to be a good option.
the only question is how many miles the motor gets. but its a 2stroke, so that aint the main priority eh?
I'm yet to see a turbo give the reliability that one expects ...
I think I woulda made the same pull as that 154 if my rave wire wasn't broken haha but it' is pretty hard to compare when the other rider is 120 lbs lighter