I just got the new vortex cdi on, I would have paid double if they wanted me too, this thing kicks ass!!! Along with the stock curve and 7 other curves, it also has a setting for stock curve but with the rev limiter at 8900 rpm and another with stock curve and the rev limiter at 9150 rpm. This thing solved all my problems of hiting the rev limiter right when it starts to make big power, the handle bar toggle switch is pretty cool too!