Select extras from the main options, then select secrets and enter the following:

Password - Effect

SPEEDY01 - Infinite Turbo
MAXSKILL - Max Skills
E06J3CT5 - More Weapons
GM2OPEN8 - All Modes
A11T3AM5 - All Teams
5Y104D9A - Streetballer Team
WIMP_A.1 - Weak Cpu Players
Z26BEXW8 - Micro soccer mode