Infinite Boost and Shield At either start or pause screen press L+R Z L+R Z Infinite Ammunition At either start or pause screen press L+R L+R L+R L+R Z Extreme Lap Challenge At either start or pause screen press L+R L+R L+R Z L+R Unlock all Racing Levels At either start or pause screen press L L R R Z Z L+R+Z Allways win first race At either start or pause screen press L+R+Z L+R+Z L+R+Z Double money for race Pause the game and press L R Z L R Z L R Z