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.
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.
Disable Arrow Indicators
As the Character Selection screen appears, hold R + Start.
Disable Destination Indicator
As Character Selection screen appears, hold L + Start.
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.
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!
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.
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.
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 Stop
Press L + A during game play for a Crazy Stop. Note: Press L + [Minus] when using a race controller.
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.
Use the horn
Press Y to beep the horn.
Crazy Box mode
To complete the 30 times level, drive down the middle of the road at a relatively slow speed.
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 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.
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.
Crazy Fare
Play a 10 minute game on arcade mode. Go all the way the parking garage. You will see a little ramp that goes to the second floor of the garage. Go right and hug the wall until you get close to the edge and stop. VERY SLOWLY go over side of the building. STILL GOING SLOWLY, go on the yellow roof and stop. You will see a girl with a green dollar sign above her head. Pick her up. You will notice her fare starts at $975.00 She will have to go to the police station, meaning you have to go over the long freeway. You have 90 seconds to do it and should arrive just before time runs out. If you do some crazy moves you can increase your fare all the way up to $1200.00 This trick isn't hard but yet consumes a lot of time. Try to pick her up as one of the first couple of passangers. Another way is find some one who goes somewhere close to the parking garage. Now with one passanger you can earn over $1000!
How to beat the final Crazy Box
Go down the road until you arrive at the freeway. Then do the U - turn. Then if you don't know where to go after that just turn left on all the turns A way to make sure this is a real hint is to start out going backwards then you should see the mall.