know what i think i will try a few numbers aswell
That's not going to work, if there was any other codes, they would have been released with the others. No one just figures out the codes, they're always released by the game developers.
The codes are fine as they are, they don't suck at all, and they're exactly the same as Saint's Row's codes, and no one complained then. Using the cheat codes on this particular game ruins to the fun of survival in the city, you must really suck if your using codes before completing the game. If you have completed the game, using codes is obviously justified because you can relax and not worry about achievements.