Speed Devils
All Cars and Tracks
While playing a game, press B, Right, B, Right, Up, B, Up.
Clean Pause
Press the start button to pause the game, then press and hold down the Y button and press the X button.
Extra money
While playing a game, press A, Right, A, Right, Up, B, A.
Gameshark Codes
Infinite Cash 89BB8EA500000010
Infinite Points DCB0807A00000100
Infinite laps
When selecting tracks go to the option screen. then turn weather to sun, time to day, mirror on, nitro on, checkpoint on and the other two off. You will get infinite busters as well. If this doesn't work, enter it after the code for all cars and tracks. So far I know it's for arcade mode only.
Infinite nitros
While playing a game, press Down, Up, Down, Up, A, X, A.
Play Class S in championship mode
In championship mode, if you successfully finish Class A (beat Driver X at least 3 times) Driver X will ask you to race with him. You can use his car if you win the match, and you will pass to Class S. In this class, all enemies are the same as Class A except Driver X.
Skip current class
While playing a game, press Down, Right, Down, Right, A, X, A.
