QBhoy
I think what is being compared is how the engines are set up by the manufacturers. Carb vs MPi. That is not to say that the carb engines could not achieve similar horsepower, it is just a matter of what they are configured to do. there is no question that many MPI engines are configured to get more HP than their carb'd equivalents.
On the flip side of the coin . . .
My Carb'd 7.4L was rated at 330 HP (1991 model)
My MPI 7.4L engines are rated at 310 HP (1996 model)
So, why are the MPI engines in my current boat 20 HP less than the same size engine in my prior boat? :noidea:
What I don't see information on, as I search the web, is if you can or cannot achieve significantly more HP/Torque from an MPI engine vs. a carb'd engine. I would think that you could, but I'm not sure if there is specific testing/data to support that. I think the same goes for fuel efficiency. I would think that the MPI engines are more efficient, but by how much and is there testing to support it.