these are by far the best codes son FTB1 that cant get u banned. So i went out and tested 50 more lol. These are what i found, they CANT get u banned, so just add them to your list.

#bouncin rockets(AT-4)
0x009288F8 0x00001B58
#bouncin rockets(RPG-7)
0x00928934 0x00001B58
#Rapid Fire 2
0x00928E04 0x0000000F
0x00928E08 0x0000001E
#Shoot/Walk Threw Walls
0x0055A4D8 0x3ECD000A

The shoot/walk threw walls is my favorite. It lets you move through barriers. It also lets u climb any building with spiderman on (btw spiderman works without the activation of FF2)