Enter the following at Autobot HQ:

Code - Effect

Circle, Circle, Circle, Square, L1, L1, L1, L2 - Big Head Mode
Circle Circle Up Down R1 R2 Down Down - Glide Camera Tilt
Up Up Square Circle Square Square L1 L2 - Infinite Dash
Up, Down, Up, Down, Circle, Square, Square, Circle - Infinite Powerlink
Up, Up, Down, Down, L1, L2, L1, L2 - Infinite stealth (Must have convert minicon equipped)
L2 L2 Square Circle Square R1 R1 R2 - Super Tracker Beam
L1, R2, R2, Square, Square, Square, Square, L1 - Turbo Mode
L1, L2, Circle, Circle, Square, Circle, L2, L1 - Unlock All minicons