I went when a local shop was doing 3 runs for $25 special to bring in the crowds. Believe me it worked to bring in the bikers and of course after you signed up there was a wait for your turn. I would say a lot of money was spent on accessories and possibly a bike or 2 was sold while the guys and gals waited, this was a great idea for the shop to stimulate business.
Back to your question, the EGA(exhaust gas analyzer) lets you know if you are rich or lean so you know for sure which way to go with the jet sizes. I would not allow them to run the motor to redline unless you plan to ride that way. I have no intention of going past 4500 rpm ever on this bike. Horsepower numbers are mainly for bragging rights, so unless that matters to you, limit them on the rpm's if you go through with it.
You might try suggesting a dyno day at a low price to draw in the crowds as the shop I decribed. If you can't get a deal, S&S has a good step by step for jetting on their website. $400 is insane.
