Extreme G3 Cheats

At the start of a race, right after the timer beeps, you can use a bit
of your turbo if your fast.

To get a jump start when you begin a race, hold Forward during the countdown without pressing Gas. As soon as "Go" appears, hit the accelerator.

At the start screen menu,hit L+R+Z,L+R,Z,L+R+Z.You should get a confirmation message.
YOU MUST RETYPE CODE EVERY RACE TO CONTINUE USING

At the Press Start-screen, press
L + R, Z, L + R, Z.

If you did correctly, a message will appear. The effects of
this code only last for one race and must be re-entered before
for every race.