English Manual Translation
During the introduction sequence with the girl walking down the street during a race, press L1 + R1 to cycle through three different effects for the portion that uses the in-game graphics. Press R1 for black and white graphics. Press R1 a second time and the graphics will have a yellow tint. Press R1 a third time to add blur effect, which will eliminate jagged graphics. Press L1 to cycle back through the various effects.
While racing in the third person perspective, hold Select to display onscreen information that includes the amount of pressure being used on various controller buttons.
Successfully complete each of the Grand Prix circuits to unlock new cars. Breaking the Time Attack high scores also unlocks additional cars.
Finish in first place in lap and overall time in the Standard Time Attack GP.
Finish in first place in the Danver Spectra race in duel mode to unlock the 50's Super Drift Caddy car in free run, time attack, and duel mode.
Finish in first place in the Rivelta Crinale race in duel mode to unlock the Devil Drift car in free run, time attack, and duel mode.
Finish in first place in the Solort Rumeur race in duel mode to unlock the new style VW Beetle car (with super grip handling) in free run, time attack, and duel mode.
Finish in first place in the Kamata Angelus race in duel mode to unlock the McLaren F1 clone in free run, time attack, and duel mode.
Set the top score in each race of the Time Attack GP in Extra Mode, finishing in first place.
Exceed 3,000 kilometers in total distance raced to unlock a red roadster with a Pac-Man driver. Ghosts on scooters will race against the Pac-Man car.
Successfully complete the game with all secrets unlocked to change the saved game icon from a car to a programmer face.