Coils wired to e/f15 leads on ecm?

[Overland]

The donor ran, I just wonder if this is related to something else?

[Overland]

I'm trying to understand what purpose this might serve. Usually things under this much tape get tossed, and this is no exception. Was it an ebay fuel economy gimmick?

[tayto]

what ECM is this for? I wonder if maybe something to do with a propane conversion . but this is merely a guess at this point.

[Overland]

16196395. It was a 94 suburban. I saw no sign of alternative fuel system installed, it was all pretty well original.