Circuit Breakers

					
All Tracks in 1P Mode
Pause the game during gameplay choose Options/Sound then go to FX and press L1 L2.
Better Engine in 2P Mode
Before you select a track press X Square Triangle Circle.
Invincibility
Pause the game during gameplay and press L1 L2 L1 L1 L1 L2 L2 L2 Circle Triangle Square Circle Triangle Square.
Race at Night
Before you select a track press L1 L2 R1 R2.
UpsideDown Tracks
Before you select a track press L1 R1 X Down.
Reversed Tracks
Choose a track and press Select. As the cars enter the tunnel hold X Square and press Left or Right. Alternatively at the Track Selection screen press L2 R2 X Down.
Havel all 32 Tracks
Pause the game then select the sound option. Highlight the effect option then press both left shoulder buttons.