The powerup codes are typed in while you play, but all of the other codes can be entered at any time. To disable a code, enter it again. Entering any of the codes disables saving your game, even if you disable the code. If you want to save your game, you have to reset the PS2.
Code
Effect
Down,X,Up,X,Left,X,Right,X
Autopilot
Up,Down,X,Triangle,X,Down,Up
Constant Slo-mo
Right, Down, Up, Up, Up, Right, Left, Right
Enable the Powerup codes
Up,Left,Down,Up,Up
Get Powerup: Autoblaster
Up,Left,Left,Down,Up
Get Powerup: Bumper
Right,Up,Up,Up,Right
Get Powerup: Crippler
Up,Right,Down,Right,Left
Get Powerup: Freestyler
Down,Left,Down,Down,Down
Get Powerup: Multiplyer
Up,Down,Left,Left,Down
Get Powerup: Slow-mo
R3,L3,R3,R3,L3,R3,L3,L3,R3
Graphic Code: Black Panels
L3,L3,L3,R3,R3,R3,L3,R3,L3
Graphic Code: Circular Track (Inside, Outside)
R3,R3,R3,R3,L3,L3,L3,L3,R3
Graphic Code: Drug Mode
L3,L3,L3,L3,R3,R3,R3,R3,L3
Graphic Code: Monkey Head Mode
L3,R3,L3,L3,R3,L3,R3,R3,L3
Graphic Code: No Panels
Square, Right, Circle, Left, X, Down, Triangle, Up