Put in the code MIDAS
  

Put in the code GUARDIAN
  

On any level during racing pause the game and
  HOLD L1 and press Square, Triangle, Circle, Square, Square, Square,
  Square

Put in the code BOWLER
  

Put in the code BITESIZE

Put in the code VOODOO
  

Put in the code BONSAI

Put in the code MAGAZINE

  

Put in the code DENTAL
  

On any level during racing pause the game and
  HOLD L1 and press Square, Triangle, Triangle, Square, Triangle, Circle

Put in the code MAGAZINE

  

On any level during racing pause the game and
  HOLD L1 and press Square, Circle, Circle, Square

Put in the code TRANSMIT
  

Put in the code SCOPE

  

  Put in the code HEADCASE

On any level during racing pause the game and
  HOLD L1 and press Square, Triangle, Circle, Square, Square

Put in the code HIGHRISE

Put in the code TRACTION