EGI relay!!!

[driftlifeJDM]

i recently bought a 89 s13 with a ka24de swap i dont have to much info on the wiring or the whole swap. when i bought the guy said it needed the intake manifold gasket and a few coolant lines. i built it back up and the car runs like a tractor. found out that it was getting flooded with fuel on cylinder 4-3 so im checking into maybe having bad injectors. but to my main questions haha when i turn the key to off position the EGI relay buzzes pretty loud none stop until i turn the key switch back on, disconnect the battery or remove the relay. i cant seem to figure out why it does that. ive done alot of research and a bunch of people have the same problem but no one seems to figure it out. n its driving me effen crazzy!

[Pro ViZIon]

Firstly check the o rings on the injectors. They are probably bad. Also, for the relay try putting in a different ecu and see if that fixes anything. I had an issue similar where when you would turn the key to off everything in the engine bay still had power and I would have to pull the egi relay everytimr. Swapped in another ecu and the problem went away.