bmxbassrx7

i have an 87 se 5 speed i have recently replaced the engine. i have had the engine in for 2 weeks now and all the car has done is sit. it gets spark and the fuelrails have tons of pressure, i have replaced all injectors from a running car that had one bad rotor(i know they are good) new fuel was added to car. it seeme that the injectors are not getting the ground signal from the computer although the computer has also ben replaced, from same car as injectors. if you have any info please help. or if you live in the lexington NC area and would like to come over and help that would be great. please message for address. thanks