As a back story: I have a Tusudo s2 exhaust, decided to take care of the rattling coming from the S-pipe and the cat by replacing the donut gasket. Forgot to tighten with my air tools. Was sitting in the drive through and the car just shuts off. Get it towed; then I checked the fuses and the EFI fuse blows when the key is put to "on". Unhooked everything I can think of one at a time from the engine and it still blows. Fast forward to today, I put a multimeter to the fuel pump and have a 2.9 ohm reading on it. So I don't think that's the issue. unhooked both O2 sensors and it still blows. I put a multimeter between where the fuse is and I get a super high reading of like 19 ohms and sparks everywhere. I can't figure out for the life of me what is grounded out. Does anyone on here have any thoughts? Tomorrow I will be tracing through wires on the loom to see if that's the issue. Side note: When turning the key to "on" the green cold engine light flashes. Don't know what this means either.

update for today; unplugged the ECU and flipped the key to "on" fuse box flips out with a weird noise then the fuse blows after plugging in the small connector on the ECU. Bad computer maybe?

update as of 7/13/18 pulled off engine harness, the mocked it up and now the car starts without blowing the fuse. I just have several codes and I dont know where the items are its talking about.

here are the codes