6 Pit Droids  -  Go to an empty game slot in tournament mode. Holding Z and entering the letters with L, type in RRPITDROID. Then select End and put in initials as usual At Watto's shop, press UP, Down, Left, Right, Right, and Up. Now you will be able to have 6 pitdroids. 

All Codes  -  If you want to get all of the cheats, first enter the game in Tournament mode, and go the an empty name spot. Put in RRDEBUG as your name (hold down Z and use L to put the letters in. You should see it in the lower left part of your screen. Then, still holding Z, use L to push the end button. OK should pop up in the lower left of your screen.

Using Z and L as before, type in RRTANGENTABACUS. Then start any race, pause it at any time, and on the panel on the far left of your controller push up, left, down, then right. Cheat options should then show up, and you will be able to use any of the cheats. Good luck!! 

Auto-pilot  -  Enter the "All Codes" cheat shown above. During play press R then Z. the pod racer will automatically navigate the coarse, the speed is the only thing you control. But do not touch the joystick, if you do your podracer will spin around and lose control. To get the Podracer under your control again, press R then Z. 

Debug Menu  -  Start on an empty file in the tournament mode. Now, where it tells you to put your initials press and hold the Z button while going through the letters and instead of pressing a to put in a letter, press the L button. When doing this correctly, the letters that you are typing should flash on the bottom, left of your screen. Enter "RRDEBUG". Then while still holding Z, go to the word "end" and press the L button. After doing that, type in your initials the regular way using the A button. During any race press the Start Button and then press Left, Down, Right, Up on the D-pad. Now you should have the debug menu. 

Dual Control Mode  -  Select an empty game save (to erase, press C-Up), the hold the Z button while scrolling through the letters on the name entry screen. To enter a letter, hit the L Button. Enter the following word: RRDUAL. When you're finished, select "End" and hit L again. Now enter your name the usual way. You now control the game with two analog sticks. Use controller ports #1 and #3, press forward on both sticks to drive and pull back to steer. 

Earn Easy Money  -  Put in the invincibility cheat. Go to the junk yard and buy parts that are the same or better than the parts you have (ignore what the bar tells you). The dealer will give you a wad of cash, or make better parts cheap. These parts are beaten up, so they sell for less. Place in an unfinished race, and go back to look at your parts. If you had the invincibility on, they will be like brand new! If you bought a part that was worse than your original, you can now buy back the original, but for less than you sold it to the dealer for! 

Invincibility  -  Select an empty game save (to erase, press C-Up), the hold the Z button while scrolling through the letters on the name entry screen. To enter a letter, hit the L Button. Enter the word: RRJABBA. When you're finished, select "End" and hit L again. Now enter your name the usual way.

Start a race and press START to pause it. Now press D-Pad left, down, right, up -- and you will be invincible. 

Mirror Mode  -  Select an empty game save (to erase, press C-Up), the hold the Z button while scrolling through the letters on the name entry screen. To enter a letter, hit the L Button. Enter the word: RRTHEBEAST. When you're finished, select "End" and hit L again. Now enter your name the usual way. Pause the race during gameplay and enter D-Pad left, down, right, up to activate mirror mode. 

Play as Cy Yunga  -  To play as Cy Yunga select an empty space in tournament mode and hold Z while pressing L over the letters RRCYYUN. While still holding Z, highlight END and press L, A. NOTE: You must have Bullseye Navior to use this code. 

Play as Jinn Reeso  -  Select an empty file, then press and hold the Z button while you scroll through the letters. Spell out the word "RRJINNRE" by holding Z and pressing the L button while over each letter. You should see the code spell out in the bottom left corner of the screen. When you are finished, highlight END and press L. NOTE: This code only works AFTER you unlock Mars Guo. 

Sebulba's Pod Racer  -  To get Sebulba's Pod to race with, all you have to do is win the last race, and he will be able to be selected! Also, it mentions it in the manual, but double tap R to flash his vents. Enjoy! 

Show Credits  -  This code allows players to view a photo of the team that designed this game. Take first place in all Tournament mode races, then activate the mirror courses in the Track Info Screen. When the Title Screen goes into demo mode, press Up-C. 

Taunts  -  Go to tournament mode and pick a race. Before starting the race press and hold the Z button. Begin the race as normal still holding the Z button and your podracer pilot will taunt the other racers. NOTE: This will not work if your podracer is the track favorite. 

Turbo Boost  -  At the beginning of the race the announcer will say, "3... 2... 1!" Just before he says, "1!", push the analog stick UP and press A. If it worked your pilot will shout. 

Unlock Hidden Characters  -  Here are the times/tracks needed to unlock the hidden characters and their racers in the game: 

Seulba
The Boonta Classic
Galactic Circuit
Lap Time: 02:04:210
Race Time:06:20:012 

Aldar Beedo
Beedo's Wild Ride
Amateur Circuit
Lap Time: 01:02:986
Race Time:03:16:697 

Ratts Tyerell
Howler Gorge
Semipro Circuit
Lap Time: 01:31:370
Race Time:04:48:510 

Mawhonic
Andobi Mtn. Run
Galactic Circuit
Lap Time: 01:39:309
Race Time:05:05:648 

Slide Paramita
AP Centrum
Invitational Circuit
Lap Time: 00:58:410
Race Time:03:03:260 

Clegg Holdfast
Aquilaris Classic
Amateur Circuit
Lap Time: 01:04:700
Race Time:03:16:926 

Bullseye Navior
Sunken City
Semipro Circuit
Lap Time: 01:52:620
Race Time:05:43:101 

Ark Bumpy Roose
Bumpy's Breakers
Semipro Circuit
Lap Time: 02:09:358
Race Time:06:47:380 

Wan Sandage
Scrapper's Run
Semipro Circuit
Lap Time: 00:44:904
Race Time:02:23:978 

Bozzie Baranta
Abyss
Invitational Circuit
Lap Time: 01:02:639
Race Time:03:12:934 

Neva Kee
Baroo Coast
Semipro Circuit
Lap Time: 01:38:300
Race Time:04:59:640 

Ben Quadinaros
Inferno
Invitational Circuit
Lap Time: 00:59:549
Race Time:03:04:160 

Teemto Pagalies
Mon Gazza Speedway
Amateur Circuit
Lap Time: 00:16:072
Race Time:00:52:081 

Mars Guo
Spice Mine Run
Amateur Circuit
Lap Time: 01:29:470
Race Time:04:30:880 

Boles Roor
Zugga Challenge
Semipro Circuit
Lap Time: 02:01:261
Race Time:06:10:897 

Fud Sang
Vengeance
Amateur Circuit
Lap Time: 01:16:880
Race Time:03:51:921 

Toy Dampner
Executioner
Galactic Circuit
Lap Time: 00:31:540
Race Time:04:42:310