Yeah yo. Umm... soemthin called gameshark. But it could mess up your file, and you ahve to buy it to do certain cheats. Wish there was a code though, like up up down down bleh bleh and otha stuff.
When you get to race # 111 save your game to 2 memory cards . Then when you beat race # 112 , one memory card can have the vapor and the other memory card the mantis .