Theres the factory way to break them in and then theres the way some racers swear by. What you do is run the bike through the gears getting to about 75% of redline, ride the bike like this for about 15 min. This gets it up to operating temp. Then park it and let it cool, Once fully cooled, do it agian but take rpm's a little higher. Keep doing this for the first roughly 100 miles. Change the oil, use dino oil. Then pretty much run it normal. They might be some details Im missing but this sums it up. The busa will be hard to run through the gears getting up to 75% redline, so you would have to keep it in fist and second. This process is suppose to seat the rings and get the bike through heat cycles quicker and makes the engine run very strong. If I find the link to the site explaining this I'll let you know. Dave Leppeliemer (from core) breaks his bikes in this way.