Need for Speed - Underground - Platform: Playstation 2

Cheat Codes:
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Submitted by: Kingmook

Enter the following at the main menu:

Cheat                                  Effect 
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Down, R1, R1, R1, R2, R2, R2, Square Unlock all Circuit Tracks 
Up, R2, R2, R2, R1, Down, Down, Down Unlock all Sprint Tracks 
Right, Square, Left, R1, Square, L1, L2, R2 Unlock all Drag Tracks 
Left, Left, Left, Left, Right, R2, R1, L2 Unlock all Drift Tracks 
R1, Up, Up, Up, Down, Down, Down, L1 Unlock Drift Physics in all modes 
R2, R2, R1, R1, Left, Right, Left, Right Unlock Level 1 Performance Parts 
R1, R1, R1, R1, R2, R2, Left, Right, Unlock Level 2 Performance Parts 
Down, Left, Up, Down, R1, R2, R2, Square Unlock Level 2 Visual Parts 
Up, Down, Up, Left, Down, Down, Up, Right Unlock Nismo Car 
Up, Up, Up, Up, Down, Up, Up, Right Unlock Petey Pablo Car 
Up, Left, Up, Up, Down, Left, Up, Right Unlock Rob Zombie Car 
Up, Right, Up, Up, Down, Right, Up, Right Unlock Mystikal Car 
Up, Up, Up, Right, Down, Down, Up, Right Unlock Lost Prophets Car 
Left, Right, Up, R1, R2, R1, R2, Up Unlock Ford Focus 
Up, Down, Down, Up, L2, Up, L2, Down Unlock Subaru Impreza 
Left, Left, Left, R1, R1, R2, R2, L2 Unlock Mitsubishi Lancer 
Right, Right, Right, L2, L2, R2, R2, Up Unlock Nissan Sentra 
Left, Right, Left, Right, Up, Down, Up, Down Unlock Hyundai Tiburon 
Right, Right, Down, Up, Square, L1, R1, L2 Unlock Nissan 350Z 
Down, Down, L1, L2, L1, L2, L1, Down Unlock Nissan Skyline 
Up, Up, Down, Down, Up, Left, Square, R2 Unlock Honda S2000 
R1, R1, R2, R1, R2, R1, L2, L1 Unlock Toyota Supra 
Up, Down, Left, Right, Square, R1, L2, R1 Unlock Nissan 240SX 
R2, R2, R1, R2, L2, L1, Down, Up Unlock Acura Integra 
R1, R2, Down, Left, Up, Right, Left, Right Unlock Acura RSX 


Unlock eveything:
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Submitted by: evin

Go to the main menu and press r1, r1, l2, l2, r1, L1, r2, triangle, 
square, x, x, x, circle, circle, triangle, x, r2, r1

Use rims that normally will not fit: 
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Certain cars can only fit so big of a rim. For example, the Miata 
can only fit 17s, but if you get a car like the Skyline put 20s on 
it and trade it in for the Miata. The Miata will now have the 20s 
that the Skyline had in it. Do not try to install any other rims 
on your new car because the rims will go back to the maximum sized 
allowed.