Do the free mods, throttle, grey wire, snorkel, etc. Get the gytr yamaha
ais removal kit. It will remove the ais crap(do not throw any of this stuff way, it makes your bike technically illegal, tough to get busted for, yet it has happened), and give you the jets you need to react to having more airflow. I did the kit, but went with the fmf
jets, mostly because the gytr kit was back ordered for 3 months when I was first messing with my bike. This bike is a bit prone to bogging, so I did the boyeson qiuckshot accelerator cover. It helped out alot. I've also done a full fmf factory 4.1 exhaust
system, the scaryfast powernow system, and a buch of other things. I haven't been able to find a K&N airfilter yet, but they should have one out soon. All of the things that I have done to my bike have made it really fast, with a torque heavy low powerband.
I have yet to loose a drag race with any of my buddies. The hit comes on fast and easy. These bikes are not crazy powerful or fast as stock machines, I think that they have about 37 stock horses, but with just bolt on do-it-yourself type mods 45-50 horses are easily there. That's not to say that you need them, but its always fun to hot rod things.