Good question. If you got a clymers, find you an OHM meter & check the stator out according to the manual's specs. If your stator is going screwing, your timing will be effected, resulting in backfiring.
Me 2...it take some getting used to, that's for sure. But I can still take off in 2nd & I wheelie really no more than when I did with a stock arm...usually. Sometimes if the sand is good & wet, the front end is to the moon. But if I hook up & keep it down; bye bye!
I had a Focus for a couple days one time when I was getting my Old 4x4 dodge's interior fixed before I bought it. Hit some railroad tracks on an incline at about 80-85 & swear I had to have flown about 10-15' with at least a couple feet of air underneeth. Bottomed out the suspension soo damn hard it must have blown something out in the front ones because everytime you'd hit the brakes after that it'd bounce hardcore like a hoopdy...ah the good times.
I would think it wouldn't be a bad idea for trail riders who can't always open it up & get some air rushing through the radiator. I couldn't tell you how to wire it up to you stator...but if you're not too concerned about wait & don't have an airbox anymore, you could probably rig up a little lawnmower batter in there & have it on a switch powering 1 or 2 12v fans on the radiator. You'd have to fab some sort of mounts though. Probably wouldn't be too hard at all, just would take a bit of time fabbing everything.
I dunno about you all, but this mug hardly ever sees 6:30AM, unless I'm leaving for the dunes or still partying from the night before & haven't slept yet! May have to setup the VCR timer & record it though...