The best performance upgrade for the money, I believe would be a tuned pipe. If your handy you could pickup a 50cc pocket rocket t-exhaust about $20+ on ebay
Originally Posted by Evan
Well, all of the above actually. Reliability is probably first followed by performance. Like most I'm light on cash this time of year but I really want to see what everyone is doing and how much bang they got for the buck. Already getting some great ideas. Keep 'em coming!