I just purchased a 450r and absolutelly love it. Being a true motorhead I cannot leave anything stock for long. I am wondering if there are any cheap mods that can be done to improve the performance of my quad? I am not looking to void the warranty so that has to be considered. Eventually I will get a cam and pipe but for the time being the stock ones will remain. Are there gains to be had with different jetting or modding the internals of the stock pipe? I am new to the 4 stroke motorcycle engines. Any input would be greatly appreciated. TIA