Crash Tag Team Racing cheats and cheat codes for Sony PSP

Chicken heads:
When you are at the main menu, hold L1 + R1 and press X, O, O, Square. 
If the code is accepted, you will hear a sound. 

No HUD:
When you are at the main menu, hold L1 + R1 and press X, Square, Triangle, O. 
If the code is accepted, you will hear a sound. 

Toy block cars:
When you are at the main menu, hold L1 + R1 press O, O, Triangle, Square. 
If the code is accepted, you will hear a sound. 

One hit KO's:
When you are at the main menu, hold L1 + R1 and press X, O, O, X. 
If the code is accepted, you will hear a sound. 

High speed mode:
When you are at the main menu, hold L1 + R1 and press O, O, Triangle(2). 
If the code is accepted, you will hear a sound. 

Japanese Crash:
When you are at the main menu, hold L1 + R1 and press Square, O, Square, O. 
If the code is accepted, you will hear a sound.

Control loading screen:
Press X to burp or O to fart while the game loading. Press the D-pad in 
combination with X or O to control the change the sound.

Unlock Pasadena, Crash, Crunch, Nina and Neo Cortex Ps2 cars:
Link to the Ps2 version of Crash Tag Team Racing with a USB cable. 

Unlock Extinction Party battle arena and Lungle Rumble battle arena:
Link to the Ps2 version of Crash Tag Team Racing with a USB cable. 

Crash's Baby costume:
Collect all the Die-O-Ramas. 

Earn coins easily:
Drink a Whumpa Whip and let a Ninja Penguin attack you. Then, pick up your 
coins.

Toggle Control Loading Screen 
During the loading screens, press X to burp or Circle to fart.