I never thought EFI had much advantage over carb on an outboard. As I understand it, they are quicker to start, but fuel economy is about the same. DFI is a different animal....
true story!
carbs get a bad rap mostly 'cause folks let 'em go without tha right maintance and tune... then they ***** about 'em.. only efi I can make out perform well tuned and maintained carbs is tha "hot rod" stuff......