I went over my wiring again today to see if I made any mistakes which it seems I haven't. I changed out the EFI relay and the Circuit Opening Relay to see if there was something faulty in them. The new COR which came from a Gen 3 turbo did in fact help and increased the longevity of the fuse though it still blew like the rest. I ended up throwing in a 20amp fuse to see if I could pull a code but alas nothing.
Since then I have worked out the issue and it was as simple as the Walbro pump's increase draw on the EFI circuit was more than the 15amp fuse could handle. Unplugging the O2 sensor has dropped the overall amperage across the circuit so that it runs the pump without blowing the EFI fuse.
Oddly enough the added draw was making the engine run much hotter than normal and after fixing the issue and having the engine back running nicely on the 15amp fuse, the engine temperature was reduced considerably to the point where you can leave your hand on the intake manifold without burning it.