The Yamaha dealer took out the plug in the exhaust before I got there, but did not take out the variator restrictor.
My top speed is right at 30 right now with excellent acceration and great hill climbing. The variator restrictor is what limits your top speed and I have not taken it out yet. It is supposed to be very easy to do. I even have directions, but just have not done it. It seemes to have plenty of power, though I have been going pretty easy on it since it is still in "break in" period. I think I will prob. wait untill after the break in to mod any more (just to tempting to go fast)
Ill let you know when I do though