I read my own post and I don't think its clear lol!

I have two cars one is mfi and one is already efi as its a later model it was efi from factory.

Mfi is rotten and is being scrapped but has a good alarm with it,

Was planning on swapping the car loom into the EFI car to get the alarm and wanted to know if they were the same or if I am going to have to rewire the alarm

Not changing the engine loom

Thanks