All racers
At the title screen, press R2(3), L1, Triangle, L2(3), R1, Square to unlock all characters.

Ending bonuses
Successfully complete the game to unlock the Free Run mode (no vehicles on the road), Free Run Twin mode (two player Free Run), and "Credits" options.

Face off mode
Successfully complete championship mode once to unlock face off mode against the Roadster.

Bus
Defeat the bus in Face Off 4 to unlock it.

Roadster
Defeat the Roadster in Face Off mode to unlock it and another face off race against another car.

Saloon GT
Defeat the Saloon GT in Face Off 3 to unlock it.

Towtruck
Play in championship mode until you unlock Face Off 2 in the special options screen. Defeat the Towtruck once to unlock it.

Quick start
Accelerate immediately before the "1" fades during the pre-race countdown to start with a slight boost in speed.

Increase boost
Drive on the wrong side of the road to keep increasing your boost. This can also be done by driving in the center of a double lane. Drive on the wrong side of the road and use the turbo when you get it. After it is gone, your turbo will either be full or half full.

Full bonus
Drive a perfect lap (a lap without any accidents) and your bonus will be automatically filled.

Better turns
When turning sharp corners, lightly tap the gas to turn sharper and slide less.

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Game Shark Codes

Master Code (Must Be On)             EC8783CC 1444403C
Infinite Turbo All Races             4CADF902 145625DD
Infinite Credits                     4CBB7938 1456089C
                                     4CBC83E8 1456089C
                                     4CA26E78 1456089C
Unlock Survival Mode                 3CA215C4 1456E7A5
Unlock All Cars                      1CA21528 1456E7A5
                                     1CA2152C 1456E7A5
                                     1CA21530 1456E7A5
                                     1CA2152E 1456E7A5
                                     1CA21534 1456E7A5
                                     1CA21538 1456E7A5
                                     1CA2153C 1456E7A5
                                     1CA21540 1456E7A5
Unlock All Tracks                    3CA2154C 1456E7A5
                                     3CA21554 1456E7A5
                                     3CA2155C 1456E7A5
                                     3CA21564 1456E7A5
                                     3CA2156C 1456E7A5
                                     3CA21574 1456E7A5
Unlock All Face-Offs                 3CA215B4 1456E7A5
                                     3CA215B8 1456E7A5
                                     3CA215BC 1456E7A5
                                     3CA215C0 1456E7A5

Perfect Stats in Single Race Average

Speed, Best Lap, etc.                1CBCA938 1456E7A5
                                     1CBCA93C 1456E7A6
                                     1CBCA918 1456E7A5
                                     1CBCA91C 1456E7A6
                                     1CBCA8F8 17E9C70C
                                     1CBCABD8 17E9C70C
                                     1CBCAAB8 17E9C70C

Perfect Stats in Championship Race

Average Speed, Best Lap, etc.        1CBC91D8 1456E7A5
                                     1CBC91D8 1456E7A6
                                     1CBC90B8 1456E7A5
                                     1CBC90BC 1456E7A6
                                     1CBC9398 17E9C70C
                                     1CBC9278 17E9C70C
                                     1CBC9558 17E9C70C
                                     1CA7B888 F77A4068
                                     1CA7B88C DB940798
                                     1CA7B890 EF7528C5
                                     1CA7B894 F36E1482
                                     1CA7B898 14563C97

PS2 Games

Burnout

Burnout 2