I think you will be quite pleased. The first thing you should notice if the jetting is spot on as claimed will be the fact that it will pull much nicer through the midrange. The dip between 5000 and 6000RPM should be gone or almost gone. It's much more enjoyable without that midrange stumble. If you just put on the exhaust and don't rejet the dip gets worse because it runs severly lean in the midrange. The shop that put mine on did a dyno run with the exhaust but before they jetted and they said the mixture was something like 18:1 or more and ideal is I believe around 12 or 13:1. Anyway, good luck I'm sure you'll love it.
If 33 red cows enter a race with a total of 37 cows, should anyone be surprised when a red cow wins?