Increase damage - Damage
Better Handling - Sim
Show Credits - Credits
All Cars - Zjeejd
All Tracks - Ddzvdb
All Championships - Kslhlt
All Challenges - Oldqum


once you're in the main menu screen, press the following buttons:

R2,R2,R2,R2,R2,R1,R2,R2,R2,O

then you will hear a vrooming noise, that will tell you that you entered the cheat correctly. HAVE FUN!!!!!!!