on odb2 96 and 97 accords (and most other cars) there are two o2, one on the manifold and one in the cat.

your car should have a CEL by now and will run like shit in safe mode cuz its not getting the right o2 readings for your ECU to operate properly. get a cat that has the proper o2 bung, genius... why did you even install it if you saw that theres no o2 bung