FiTech EFI system
I have only heard the 6AL making noise with the key on eng off, and only have a few miles on my set up.
I believe we did also see things like the RPM data etc move with KOEO as well.
I will start by shielding everything together without separating any of the FiTech harness, as I don't want to void warranty (I've had it a year before installation though)
Then if I have any issues I will contact FiTech and then proceed form there at that point we might be helping with resolving issues and they may ok and stand behind the alteration.