Unlock Everything

 At the main menu, press Right, Right, Left, Square, Up, L2, L2, R1. 
 If you entered the code correctly, "Unlock Everything" will appear onscreen, 
 and you'll have all cars, tracks, and more.
 
 
 
 All cars and tracks
 
 At the main menu, press Right(2), Left, Square, Up, L2(2), R1 to 
 unlock all cars and tracks.  
 
 
 Bonus cars
 
 Unlock all of the other cars in the game. Select the San Francisco 
 Drag Race and use the Dodge Concept Viper to set a new time record. 
 Then, enter "SOUNDMAX" as a name at the high score screen. The Jaguar 
 XK-R "SoundMAX SPX", Jaguar XK-R "Analog Devices", and the Aston 
 Martin DB7 "SoundMAX SPX" will be unlocked in all modes except for 
 story mode.
 
 
 
 G4 car
 
 Unlock all of the other cars in the game including the Jaguar XK-R 
 "SoundMAX SPX", Jaguar XK-R "Analog Devices", and the Aston Martin 
 DB7 "SoundMAX SPX". Select the San Francisco Drag Race and use the 
 Dodge Concept Viper to set a new time record. Then, enter your name 
 as "PLWCBF" as a name at the high score screen.
 
 
 
 
 Alternate replay views
 
 During a replay, press Select to change the camera effects.
 
 
 Ending bonuses
 
 Win all races in story mode for San Francisco to unlock the San 
 Francisco tracks in single race and cop chase modes, as well as 
 the Chevrolet Corvette L-88, Jaguar XK-R, Lotus Espirit V8, and 
 Lotus Elise.
 
 
 Win all races in story mode for London to unlock the London tracks 
 in single race and cop chase modes, as well as the Chevrolet Chevelle 
 SS 454 and Skeeter's Pontiac GTO. Also, the Aston Martin DB7 Vantage 
 Police Car, Lotus Espirit V8 Police Car, and Jaguar XK-R Police 
 Car can be selected on the London tracks in cop chase mode.
 
 
 
 Win all races in story mode for Monte Carlo to unlock the Monte 
 Carlo tracks in single race and cop chase modes, as well as the 
 Aston Martin DB7 Vantage, Chevrolet Corvette Z06, TVR Cebera Speed 
 12, and Ford SVT Mustang Cobra R. Also, the Jaguar XJ220 Police 
 Car, Chevrolet Corvette Z06 Police Car, and TVR Cebera Speed 12 
 Police Car can be selected on the Monte Carlo tracks in cop chase 
 mode.
 
 
 Win all races in story mode for Tokyo to unlock the Tokyo tracks 
 in single race and cop chase modes, as well as the Nissan Skyline 
 GT-R V-Spec, Dodge Charger, Subaru Impreza 22B, and Shelby Series 
 1. Also, the Nissan Skyline GT-R V-Spec Police Car, Subaru Impreza 
 22B Police Car, and Toyota Supra Police Car can be selected on the 
 Tokyo tracks in cop chase mode.
 
 
 
 Dodge Viper GTS
 
 Win the track 27 race in story mode to unlock the Dodge Viper GTS.
 
 
 
 
 Dodge Viper GTS-R Concept
 
 Defeat Clark in all races to unlock the Dodge Viper GTS-R Concept. 
 Alternately, win the track 45 race in story mode.
 
 
 
 Ford GT
 
 Defeat Vasily in all races to unlock the Ford GT.
 
 
 Ford Mustang
 
 Win the track 7 race in story mode to unlock the Ford Mustang.
 
 
 
 
 Jaguar XJ220
 
 Win the track 33 race in story mode to unloc the Jaguar XJ220.
 
 
 
 
 Reeses Chevrolet Camaro
 
 Win the track 9 race in story mode to unlock the Reeses Chevrolet 
 Camaro.
 
 
 
 Shelby Cobra 427 SC
 
 Win the track 5 race in story mode to unlock the Shelby Cobra 427 
 SC.
 
 
 
 Skeeter's Chevrolet Chevelle
 
 Win the track 26 race in story mode to unlock Skeeter's Chevrolet 
 Chevelle.
 
 
 
 Pong mini-game
 
 Use the D-pad to play the Pong mini-game while the game is loading.
 
 
 
 
 Game Shark Codez: 
 
 Master Code (Must Be On):
 0E3C7DF2 1853E59E
 EE8EFCEE BCC5AF5A
 
 Computer Cars Go Crazy:
 DE987466 3BA89A82
 
 Press L1 + L2 For More Time in Navigational Challenges:
 0E9564F8 BCA99582
 DE004E9A BCA9B2F3
 
 Press R1 + R2 For More Time in Circuit/Linear Races:
 0E9564F8 BCA99082
 DE00789A BCA9B2F3
 
 Press L1 + R1 to Reset Lap Time:
 0E9564F8 BCA98E82
 DE981B46 BCA99B83
 0E9564F8 BCA98E82
 DE981F0E BCA99B83
 
 Unlock All Cars:
 DE9A2E22 BDAA9C84
 DE9A2E2E BDAA9C84
 DE9A2E2A BDAA9C84
 DE9A2E36 BDAA9C84
 DE9A2E32 BDAA9C84
 DE9A2E3E BDAA9C84