They are installing a new Dynojet Dyno that'll do quads right now, as I'm writing this in my friends' shop... http://www.leescycle.com/.
I guess there is a point of view as to which dyno is better. Mine is that 990% of the dyno's out there are from Dynojet so they have become the standard reference machine. Other manufacturers may claim a (arguably) greater accuracy for a single measurement like peak HP, but the transitional curve between the start and the end of the run will be very similar.
Anyone can fudge the numbers...punch in a different ambient temp, change the altitude, whatever.
I've personally seen a 9HP difference just from changing a worn chain/sprok set for new!! Not to mention, tire weight, composition, pressure, tread design ALL have a hand on the final result.
Yea, I like to brag my ZX10r puts down 167.5HP at the rear wheels but it was the dyno that allowed me to tune and set my Power Commander to achieve my state of tune.
HP readings ore only relative to the same dyno machine...period. You can only accurately compare quads. bikes, or cars that were tuned on the same dyno.
I'll post my run in a couple of weeks!!