Does Anyone Know What This Controller is For???

I can't seem to remember what this is for:

Is there a data plate on the back or side giving make, model and serial number? If its not there, then maybe in a battery compartment? Tim

It has does not say anything on the back...I'm going to take it apart soon...maybe.

Looks like a handheld programmer for some kind of efi system but no idea what.

That is what I was thinking...but can't for the life of me remember where it came from. I'll pull it apart tonight an report back.

If has a DB-9 port on the bottom.

Whatever it is, it looks like fun

It is made by a company called EFI Systems...it looks like they make stuff to interface with 5.0 era Ford ECM's.

More to come...

If there is a camera at the end of that cable and it says sphincter anywhere in it's title....back away slowly.

If it turns out it'll work w an 89 5.0 Mustang and you want to sell it, I want 1st dibs!