At the main menu, press SELECT to access the "Enter Code" screen, then enter any of the following code: (Note: Some of the code can't be dis abled unless you reset the game data at the option menu)
|BIGUNS||Combines the effects of all above codes|
|BIFFIN||Max. Upgrades for all cars|
|ALL4ME||Unlock all Teams|
|CUPIUP||Unlock all Tracks and Cups|
|IAMCAR||Weird Sound Effects|
Contributed By: shadowcore76.
Right when the number 1 appears, press A and hold it to get a boost at the start of the race.
Contributed By: CpuBot561.