right, square, left, R1, square, L1, L2, R2 - unlocks all drag tracks
left, left, left, left, right, R2, R1, L2 - unlocks all drift tracks
down, R1, R1, R1, R2, R2, R2, square - unlocks all circuit tracks
up, R2, R2, R2, R1, down, down, down - unlocks all sprint tracks
X, circle, triangle, triangle, X, X, circle - unlimited nitro
X, X, triangle, X - get free parts
R1, up, up up, down, down, down, L1 - drift physics in all races
by NFS Unlimited - www.nfsunlimited.net