Sounds like you pinched a wire in the injector harness and have at least one injector stuck wide open due to the short. Time to start checking the injector harness one by one until you find the culprit(s).
Rick
Owner of 00 #1611 Silver (Totalled) 98.5 T-Red SVT #6180
Buckshot77@msn.com
Misc 3L parts for sale