Theres a shit load of information on the Cyrax forum, traps, setups, you name it. Search and you shall find. ABout the bomb trap, it was removed. The only way to do it is by using Cyrax's MK3 Costume. Apparently NRS dropped the ball and the costume render made him a pre patched version. The inputs to performing the bomb trap are the following:
B+1,2,1~Mid Bomb~dash~2,2 (Victim Explodes into air), NJP, B+2, Then you do the rest. I like to follow with 3,3, Net, 3,3 ragdoll. If you want more damage throw a sticky bomb into the mix.