Big E is sort of on the money (sorry E)......... however, running an exhaust system (complete) would be my first choice. It could be installed without the addition of a powercommander or yosh box! But, (E's on the money here) the biggest performance gains will be noticed with the pairing of an exhaust system/ pc,yosh! You Won't be in danger of harming the bikes motor without installing the whole shebang! So, in a nut shell buy a pipe and wait on the pc/yosh! You won't regret it................