Tha bomp comes from the expression "You gots to have tha bomp". Which is what you say when describing a car or "ride" that has a good sound system. It indicates that it is necessary to have a good system in your ride. A good system should both be the bomb and pump (out volume) to truely represent the tru playa that you really are. Thus, "bomp".
You gots to have tha bomp!