Inj A fuse is the supply voltage for bank 1 (dr side), and Inj B fuse is the supply voltage for bank 2. Both of these are in the underhood fuse block. When u get a chance, double check those and also make sure the connectors at the pcm are fully seated. And get back to me on which inj are not firing whenever u get a chance. If u can narrow down exactly which injectors, then I can narrow down which wire(s), harness, dist point, etc. Thnx bro.