left, leftl, right, square, square,L1, R1
$200 dollars in career mode:
up, up ,up, left, R1, R1, R1, down.
HSU Club Sport Car: left, left, left, O, O, O, triangle, triangle , left, left, up, down, left, right.
Free Parts: X, X, Triangle, X
Unlimited Nitrous: X, O, triangle, triangle, X, X, O
Hope they work!
I found these at cheatplanet.com