Need for Speed - Underground:
Depending on your game version there are some slightly different cheats:
Unlock all drag tracks:
At the main menu, press Left, X, Right, R, X, L, White, Black.
Or: Right,X,Left,R,X,L,White Black.
Unlock all drift tracks:
At the main menu, press Right, Right, Right, Right, Left, Black, R, White.
Or: Right(x5),Black,R,White.
Unlock all sprint tracks:
At the main menu, press Up, Black, Black, Black, R, Down, Down, Down.
Or: Up,Right(x3),R,Down(x3).
Drift physics:
At the main menu, press R, Up, Up, Up, Down, Down, Down, L.
Or: R1,Up(x3),Down(x3),L1.
Unlimited turbo (Nitro):
At the main menu, press A, B, Y, Y, A, A, B.
Unlock all circuit tracks:
At the main menu, press Down, R, R, R, Black, Black, Black, X.
Rocket launchers instead of nitro:
Press X,Y,Y,B,X,X,X.
Rim Change:
If you like a certain set of rims but it is too large for your current car, you can fit the rims on a correct car (any one will do) and trade it in for the car you want.
Once you do though, do not attempt to adjust the rims or they will not be placed back on your car.
Points for 360 in Drift:
When you are in drift mode you can get some extra points for doing doughnuts.
Hold one direction and the handbrake and gas and let go of the handbrake after a second.
You'll just sit there and do doughnuts. This won't get you massive points but it's something.
