I've tried the money cheat, and the unlock parts cheats, and nothing happens! I finally found the 'press start' screen (I had to reset to get to it) Apparently a sound confirms if the cheat worked...I got nothing. Are the cheats just dodgy? I want to get money easily because I'm not that interested in doing the races, I just want to muck about building cars.
Though I noticed on this site http://www.absolutcheats.com/ps2/needforspeedunderground2.php
Extra money Press [Up], [Up], [Up], [Left], [R1], [R1], [R1], [Down] when "Press Start" appears at the title screen. A sound will confirm correct code entry. You can start career mode with an extra $200. Note: This code has no effect if you have already started a career.
The money cheats will NOT work if you've already started Career, the others may or may not (I can't remember for sure but I don't think so.) To fix that, make a new profile or play without your memory card.
All of the cheats currently listed DO work, because I've used them, but you need to enter them very fast on the D-pad, it could take 2 or 4 or many more tries to get any to work, and since the D-pad is kinda small you need to be very careful not to hit the wrong arrow by mistake because if you do you need to wait a few seconds to retry.
Webmaster for SIKK Paint and Tuning - sikk.lefora.com Forza 3 math: (AWD + anything = guaranteed win)