those canned maps can only serve as starting point and will need to be adjusted a bit. i would think the more modified the engine the more adjusting to be done. my bike is only a stage 1 so it's fairly simple. if i were in your situation i'd try adding a little more fuel at the rpm range where the surging is taking place, and see if it improves it, or makes it worse. when it comes to playing around with those maps don't try more than 3-5 at a time. just sm. steps. don't worry about ruining anything so long as you take sm. steps and think things out your're be fine. does'nt take long to get the hang of it. it takes alot of test runs, but it's fun and rewarding. take advanage of your newly founded ability to tune your bike, like chunk says "piece of cake" plug it in and play. have fun, it's great
P.S - make sure you don't have an intake leak
