Start a game then press pause and enter the following
All camera views - L1 + Triangle, Left(2), Circle, L1 + Triangle, L1 + X, Select.
Flapping hop mode - R1 + Left, Left, L1 + Triangle, L1 + Up, Select
Floating hop mode - R1 + Left, Left, L1 + Circle, L1 + Triangle, Triangle, Select
Full turbo - Triangle, Up, Right, R1 + Square, L1 + Circle, Select
Infinite turbo - L1 + Right, R1 + Down, R1 + Left, L1 + Right, R1 + Down, L1 + Right, Triangle, Select
Lock camera - Circle, L1 + Triangle, L1 + X, Left, L1 + Circle, Circle, R1 + X, Select.
Race at high speed - L1 + Right, R1 + Down, Square, L1 + Triangle, R1 + Down, L1 + Left, Select
Recharging turbo - R1 + Right, L1 + Left, L1 + Triangle, Left, Select
Rolling camera - Circle, L1 + Triangle, L1 + X, Right, L1 + Circle, Left(2), Select
Skip a lap - Left, L1 + Triangle, L1 + Up, Select
Turbo air mode - Right, L1 + Circle, Circle, R1 + X, L1 + Left, Triangle, Select
TV camera - Circle, L1 + Triangle, L1 + X, Triangle, R1 + Up, Select.
Enter the following at the main menu
Unlock everything in the game - L1 + Left, R1 + Up, L1 + Left, Right, L2 + Triangle, Triangle, R1 + Right, L1 + Right, R1 + Down, R1 + Triangle
All racing tracks - right, L1 + Triangle, Circle, L1 + Left
All seasons - Square, L1 + Left, L1 + Triangle, Square, Circle, R1 + Down, Square to unlock all seasons
All stunt tracks and stunt mode - Square, Triangle, Up, R1 + Down, Triangle
All tracks - L1 + Triangle, Left(2), Triangle, Right, L1 + Triangle,
Next difficulty setting and season - L1 + Circle, L1 + Circle, R1 + Right
Stunt mode
Collect all of the ten track coins in Season Mode and you will unlock stunt mode (one or two players).
Race as Granny!?
Finish the game in first (with any racer) on the professional difficulty.