Alternate display
Begin game play in arcade or original mode.
Press B on controller three to switch the display to a first person perspective.
Press Y on controller three to change to another camera angle.
Press X, X, X, X, X on controller three to view a speedometer.
Press A on controller three to reset the display.
Another Day Mode
At the Character Selection screen, press R, then hold R when you pick your character. If done correctly, you will hear a horn.
Crazy Box mode
To complete the 30 times level, drive down the middle of the road at a relatively slow speed.
Crazy Box, Cracy Pole
In Crazy Pole, do a Crazy Drift to hit the pole. This will allow you to stop in both destination points of each person.
Crazy Box, Crazy Jump
In the Crazy Jump, start off with a Crazy Dash. When you get to the middle of the ramp perform a Crazy Dash again and once again before leaving the ramp. This result in over three hundred and high two hundreds.
Crazy Dash
Press B + R when in drive in original, arcade, or crazy box modes for an extra boost at any time. Note: Press R + [Plus] when using a race controller.
Use the following trick to get even more speed than a Crazy Dash. You can do this at any time, but only if you are riding and did a Crazy Dash. When riding, release R to stop accelerating. Then put your taxi in reverse, and immediately after that press B + R to do a Crazy Dash. This should result in extra speed. You can do this as many times as needed for even more speed.
Crazy Drift
Hold Left or Right then quickly press A, B at high speed to shift into "Reverse" then back into "Drive". Note: Hold Left or Right then quickly press [Minus], [Plus] when using a race controller. Note: This move can also be used as a combo when immediately followed by a Crazy Stop.
Crazy Stop
Press L + A during game play for a Crazy Stop. Note: Press L + [Minus] when using a race controller.
Disable Arrow Indicators
As the Character Selection screen appears, hold R + Start.
Disable Destination Indicator
As Character Selection screen appears, hold L + Start.
Expert mode
At the character selection screen, hold L + R + Start. If you entered the code correctly, the word "Expert" will appear in the lower left corner. No stop or arrow indicators will appear in this mode.
Have bike without having to beat all mini games
To receive the bike, go to the "select your driver" screen and press L+R, L+R, L+R etc. until you hear a chime. Then, choose the driver you want, and he/she will be riding the bike!
Limit Cut
This is basically a better version of the Crazy Dash. To do this properly you will first have to be a master at the Crazy Dash and Crazy Drift. Do a Crazy Dash and then straight afterwards perform a Crazy Drift (But without turning!). This will not seem like it makes much difference but when playing the final Crazy Box, S-S, you will only be able to complete it using the Limit Cut.
Secret Push Bike
Complete all sixteen Crazy Box levels to unlock the Secret Push Bike for each character which is usable on crazy box, arcade, or original modes. To select the bike in arcade or original mode, highlight a character at the character selection screen, then hold L + R and press Up or Down.
Underwater Passenger
Drive striaght and pick up the first orange person right in front of you. After you get to her destination, to the left by the wall there is a yellow person, she will want to go somewhere by the beach. After you get her to her destination, you will be right next to the beach and you will see the green marker for someone under the water.
Use the horn
Press Y to beep the horn.