As I told the guy in the tech line who asked why I came to the track with a Busa, First, the Busa is a fairly accomplished turner, if not the equal of a true sports bike. Second, I went to the track to learn how to ride the Busa better, not to become a racer.
Anyway, someone already said it but the main prep for the track is to get the suspension setup right. This will impact turning, accelerating, braking and confidence. A day on the track with Ohlins will make you giggle at the haters that think they are just expensive bling.
Personally, I like the Busa wheelbase. There are few turns on the tracks I have ridden that I feel my skill outruns the bike's capabilities. And the long-wheelbase is awesome when you want to come out of a turn on the gas.
I don't see using engine braking much on a track. It can help reduce front-end dive, but the point on a track is to compress the time spent braking and extend the time spent accelerating. So on track, you use maximum braking with some lighter applications to adjust the attitude of the bike. You get on the brakes, get slowed down to the speed you need it to be, and then you get off them. On the road, the goal is conservation of momentum more than absolute speed so the braking strategies are quite different. When I ride fast on the road I don't really use the brakes that much, it's mostly engine braking and getting set up in the right gear.
Still, a track day is a chance to experience your Busa with a lot fewer limits to worry about than exist on the street. Funny though when I got back from the track I felt really constrained on the road for a month or so. When you roll into a track corner, there are like 33-4 lanes of room plus run-off space too. It is eye-opening when you realize on the street you are threading an 8' wide needle.
If you have the money, you'll be getting a liter bike or a 600 for the track.
