So im attempting my first build of any kind, ive put an lt1 in a 85 z28, for some reason the pcm is constantly keeping the injectors grounded and i have no spark.???? All ive done to the harness is extended a few wired to clean things up, i removed all evap and ac wires from there pin locatins....ive also added a serial data bus, and 1 other i cant remember now to make to run an obd2 computer and the 16 pin data link im new to this (feel like a virgin lolz) so if im doin somethin stupid feel free to lay it on me