The Mav comes with a black key that has full power and 73mph top speed. It also comes with a gray key that has limited power and a 45 mph top speed. I don't need a limited key, so while the Mav is at the dealer getting some work done, I asked if he would reprogram it to be the same as the black key. He said sure. I think they normally charge $20 or 40 to do it, but it doesn't hurt to ask when you take it in for something. I'd hate to be on a long ride, lose the black key and have to go 45 mph for a day! Or week!!! I asked when I bought the Mav if they could do it then, but he said they weren't allowed to reprogram it when it's new.