password NeedForSpeedCarbon:

Efect

Password 

Unlocks Burger King Challenge

Up, Down, Up, Down, Left, Right, Left, Right

Unlocks Junkman Engine Part 

Up, Up, Down, Down, Left, Right, Up, Down

Unlocks Syntec Ford GT 

Left, Right, Left, Right, Up, Down, Up, Down

Unlocks an Extra Marker for use in shop Up, Up, Down, Down, Left, Right, Up, Down




[Easter Egg] Special Marker

How to: Input UP, UP, DOWN, DOWN, LEFT, RIGHT, LEFT, DOWN on the Press Start screen. Entry to the shop's backroom is now possible.