GT Advance Championship Racing Cheats

Enter the following code at the Press Start screen....

Hold L + R and Press Up + B

You should then see the credits

At the main menu, press and hold L and R, then press Down, Right and B simutaneously. This will give you all car tune-ups in the game.

On the title screen (where it says ''Press Start'')
Hold both L & R shoulders, then hold diagonal Up,Right
then press B.

There should be a sound. Now go to Quick race and all tracks should be available.

Enter the following code at the Press Start screen....

Hold L + R and Press Up/Left + B

Then all of the cars should be unlocked

Enter the following codes at the startup screen (where it says Press Start):

- To unlock the Indy Car Mode, Press and Hold L+R, then press Left on the D-
Pad, then press B. When you hear a sound press start and it will be unlocked.

- To unlock the Go Kart Mode, Press and Hold L+R, then press Right on the
D-Pad, then press B. When you hear a sound press start and it will be
unlocked.

- For all tuning parts, press and hold L+R then Down+Right (diagonal) then
press B.

Hold the L and R buttons, then press Down/Right + B.

Complete the final race in the professional class to unlock a seat which boosts all three stats.

To gain access to the Extra 2 option on the main menu, you must complete all classes in Championship mode (Beginner's, Medium, High Speed, and Professional). You must have Gold Cups on all tracks to open up this option, too.

To gain access to the Extra 1 option on the main menu, you must first complete the Beginner's, Medium, and High Speed Classes in Championship mode. I'm not sure exactly what the requirements, cup-wise (gold, silver, bronze), are though; I had all Golds on all tracks when I opened up this options.