I realized just after posting, that releasing an EFI unit that can be adjusted by the user might not be in their best interest, and I would be willing to bet that the EFI units are NOT adjustable programming.. my thoughts behind that is the fact that if the USER can modify the programming or mapping (whatever the tech word is), then one would be inclined to believe you could swap the EFI from the Evolution motor and put it on just about any other gas motor in its size range, adjust the EFI program map to that motor, and go. I doubt they want that right now.. so I would guess that no, the user can not modify the EFI at all.