i have an aftermarket ecu and i have the loom out of the car , now im just wondering if i can cut the diagnosis thing off from the std ecu , it has nothing to do with the aftermarket ecu , but i dont want to cut it and it be doing something anyone know ive traced the wires from the std ecu plug and to the diagnosis box and obviously it goes to sensors and shit but ive cut them but theres one wire which goes to a plug which plugs into my fusebox
the new ecu was spliced into my old loom in the cabin thats why diagnosis is still in the loom
anyone know if its safe lol or beter just to leave