Every Revolver chip comes with a 6-position switch that will let you change the power level while driving. This might not seem like a big deal at first, but imagine you are getting ready to go on a camping trip and have your camping trailer hooked up. You probably want to use your tow setting for that so you flip the switch down to your tow setting. When you get to the camp ground and drop your trailer off, you want to head down to the nearest market for some more camping supplies, and you want to do it FAST to show your buddy- just switch to your performance level! The bottom line is that all of your performance levels are available to you at the flick of a switch, no re-programming required and the change is instant!