Password Screen:
At the machine selection screen in grand prix mode, press L, R, Start, R, L, Select.

Jet Vermilion Car (much easier then winning 255 times):
Go to the password screen an put in this code: H-M2XLT8A-30 and at the car select screen push up to use the Jet Vermilion car.

And Jet Vermilion?:
There is another code you can put in at the password screen to get the Jet Vermilion racer. At the password screen type in the code: 3-KLY9V8?-30. Then go to the car selection screen and go above Hot Violet and bingo, there's Jet Vermilion.

Best Tracks to Use Jet Vermillion:
Have you ever looked at Jet Vermillion and saw that it's turn performance is a E and you need to now what kind of track's he's good at. Well I was practicing and I found out that he specializes in tracks that have ice and turns on a dime. There are three coures that have ice on them they are: Icarus circit, Kinght4, and bishop2.

Ice-Track:
When you play at Icarus Circuit or Ancient Mesa-circuits, You may be unable to steer your vehicle. Here's good trick: Press repeatedly A-button in ice area and your car will turn better in turns.

In-Game Reset:
Press Select + Start + A + B during game play at the title screen.

Open All Tracks:
Press B, Left Trigger, B, A, Right Trigger, B, B, A, A at the title screen.

New Cars:
Press A, A, B, A, Left Trigger, Right Trigger, A, B, Left Trigger at the title screen.

Faster Cars:
Press A, B, Left Trigger, A, A, Right Trigger, B at the title screen.

Slower Opponents:
Press A, Right Trigger, L, B, A, A, B, Left Trigger at the title screen.

Hints

Demonstration Mode:
Press Select at the title screen.

Delete Saved Games:
Hold L + R and turn on the Game Boy Advance. Select "Yes" at the prompt to delete your game saves.

Dirty Joker:
Win the Pawn, Knight and Bishop tracks while playing the standard difficulty setting.

Falcon Mk.II:
Win any set of tracks while playing the expert difficulty setting.

Fighting Comet:
Win the Pawn, Knight, Bishop and Queen tracks while playing the master difficulty setting.

Silver Thunder:
Win the Queen tracks while playing the expert difficulty setting.

Stingray:
Win the Pawn, Knight and Bishop tracks while playing the expert difficulty setting.

Jet Vermilion:
You can unlock Jet Vermilion by unlocking all other cars and completing championship mode 255 times. Or beat every series on Master Class with all other racers.

Master Difficulty Setting:
Win the Pawn, Knight, or Bishop series while playing expert difficulty level in grand prix mode to unlock the master difficulty for that series.

Cloud Carpet, Icarus Circuit Shortcut:
Immediately after you come out of the ice, press the boost button and hit the jump plate (It is much easier if you are at top speed), and try to aim for the on-coming track facing the opposite way you are facing, on your right. If done properly, you will land on the last stretch of the lap, keeping you at least a couple seconds ahead of your rival racers. This is an extremely difficult cut to make, but well worh it if you are willing to take the risk.

Boost Start Made Easy:
Simply start the engine just before ready flashes for the third time. (There is a big time gap for you to do it in.)

How To Get Queen-cup:
When you finish every cup (Pawn, Knight and Bishop) with Expert-mode, you can find new cup: Queen.

Sharp Turns Made Simple:
Rather than always using "blast Turns" and decreasing speed by tapping the A button repeatedly and holding the R or L buttons (for the whole time the turn lasts), you can simply let go of the A, L, and R buttons as you aproach the sharp turn, and as soon as your machine starts to slide to the side (While in the turn) tap the A button while you are holding the L or R button down. This easy technique is useful because the other racers will make wider, and a more swervy turn enabling you to have an advantage on large turns.

Give All Ships Straight A's: (A body,A boost,ext)
First pick Baba as your racer and beat any race you want then quickley go back to the main screen and press R, Z, and L at the same time then go to the page were you pick a racer and they should all have straight A's (if you don't have all the characters don't worry because when you get all of them they should have straight A's too).

Good Stuff to Know:
For an extra challenge, give Master Class difficulty a try. You can unlock Master Class by completing every series at Expert Class. A good performance at Master Class is key to unlocking several racing machines.

King Cup:
Beat every other cup with every car on every difficulty 30 times each and unlock the insane King Cup!

GameShark Codes

3 turbos-Hot Violet   
D9D4998F152D4A61  

All Vehicles   
E434ECE39154DBB6  

Inf Hlth-Fireball   
4596CC29E74B1DB2  

Inf Hlth-Hot Violet   
E8B2FD9CBF93C0E4 

Inf Hlth-Hot Violet   
E8B2FD9CBF93C0E4 

Inf Hlth-JB Crystal   
A51D3134FEF37D8C  

Inf Hlth-Wind Walker   
E8B2FD9CBF93C0E4  

Inst Win-Fireball   
EAF0A27A7568AFD0  

Inst Win-Hot Violet   
F9D5FA8EDE5EAB99  

Inst Win-JB Crystal   
FFB6A96FBF6BC388  

Inst Win-Wind Walker   
F9D5FA8EDE5EAB99  

Master Code  
0992EAADDA278D77
C94521545A4B1997
 
Throttle Open   
B502F478D671610C
99B16610BC598AD8
 

Thanks to Revolution readers Gary, Bryan, Bryan, Smash99, Paul Fallon, MadcatJonttu from Finland, Smash 99, John, MBB2k1, Madman and Speedy!