Here are the Call of Duty 6 cheats we currently have for Xbox 360.

Kill Streak Bonuses
Get consecutive kills in multiplayer.
UAV: 3
Care Package: 4
Counter UAV: 4
Sentry Gun: 5
Predator: 5
Precision Airstrike: 6
Harrier Strike: 7
Attack Helicopter: 7
Emergency Airdrop: 8
Pave Low: 9
Chopper Gunner: 11
AC130: 11
EMP: 15

If you have any cheat codes for Call of Duty 6: Modern Warfare 2 for Xbox 360 that we don’t, please post in the comments.