Trucos Need for Speed: Underground 

gimmesomecircuits – Unlock all circuits
gimmesomesprints – Unlock all Sprint circuits
gimmesomedrag – Unlock all Drag circuits
driftdriftbaby – Unlock all Drift circuits
gimmeppablo – Unlock Petey Pablo car (Mitsubishi Motors Eclipse)
havyamystikal – Unlock Mystikal car (Toyota Celica)
gotcharobzombie – Unlock Rob Zombie car (Nissan 350Z)
needmylostprophets – Unlock Lost Prophets car (Nismo Nissan Sentra)
119focus – Unlock car
893neon – Unlock car
899eclipse – Unlock car
371impreza – Unlock car
222lancer – Unlock car
922sentra – Unlock car
667tiburon – Unlock car
334mygolf – Unlock car
77peugeot – Unlock car
777rx7 – Unlock car
350350z – Unlock car
111skyline – Unlock car
221miata – Unlock car
2000s2000 – Unlock car
889civic – Unlock car
228supra – Unlock car
240240sx – Unlock car
342integra – Unlock car
239celica – Unlock car
973rsx777 – Unlock car
givemenismo – Unlock car
allmylvloneparts – Unlock all level 1 performance parts
allmylvl2parts – Unlock all level 2 performance parts
seemylvl2parts – Unlock all level 2 visual parts
slidingwithstyle – Unlock drifting physics