Borderlands 2 Discussion
Trainer Tools and Resources
You actually could still use the trainer if you are the one hosting the game, but that would be pretty crappy of you to do. You could even mess up people that join your game using certain options, so just don't do it in multi-player ever. No risks associated with VAC for Borderlands, though.
* Updated game trainers and cheats daily
* Get notified when new cheats are added
* Request which games get new trainers
* Priority support with any problem