All Tracks
     Set  the  game  to  Master  difficulty and 5 laps per race. Next,
press  X on Lil' Dave then return to the title screen. Press Up, Down,
Left,  Right, R2, R1, L2, L1, within 4 seconds. Set the game to 3 laps
per  race  and  press X on Wild Ride, then return to the title screen.
Press  Up,  Left, Down, Right, Square, R2, Circle, L2, with 4 seconds.
You  will  hear  a tone if done correctly. Now set the game to Amateur
with  Turbos  Off.  Press  X on Bomber and return to the title screen.
Press Up, Down, Left, Right , Up, Down, Left, Right, within 4 seconds.
Go  back to Options and set the difficulty to Professional with turbos
on. Finally, press R2, R1, L1, L2, R2, R1, L1, L2.

Race as Enigma
     Go to the Options Menu, set the difficulty to Master and set laps
per  race  to  6. Now go back to the Main Menu and press Left, Square,
Down, Triangle, Right, Circle, L1, R1