And the purpose of a dyno isn't to turn you into a HP superhero either. Ya, it's nice to say you have a dyno proven 70 hp bike, but the info & knowlege you gain on your way to that 70 hp is priceless. Guys, don't get hung up on the numbers. Look at the power curve as Dale said.

I come from the world of muscle cars & have seen my share of street cars with only 400 hp lay waste to "race cars" with 500+hp. This might seem as an apples to oranges comparison, but in this example it shows that 400hp with a good strong flat power curve is better than 500hp with with a power curve that peaks at a super high rpm.

One other thing, I was in Jerrys shop one time when he was dynoing a customers RZR turbo. He showed me that just by rotating the airfilter tubing a few degrees one way or another, he picked up almost 5hp! That is free power! There is no way the customer could have ever felt that by seat of the pants testing.

Also, when you bring your toy into a dyno facility, they are not just testing hp, they also have the capability to check ignition for any spark breakdown, timing curve, exhaust temp, a/f ratio, etc. These are all things to help make your toys run at their peak!