I just purchased a new 2011 vision. I am thinking about doing the stage 1 (level 2) performance upgrade. I have used the Power commander 3 & 5 on all of the other bikes and had them dynoed that I have owned. I am looking for a deeper sound and ATF ratio improvement. I also do not want to do anything to void the warnnity. Some advice from experienced victory riders would be appreciated. Thanks in advance.