Diesel JD
Full Access Member
Well just cause you have the capability to stuff more fuel in them doesn't mean you're going to be using it. That's up to your right foot. A real powerful engine can be even more efficient than a lesser engine if it's not asked to produce that HP. When do you need 300+ HP? Only when you're towing the biggest loads(maybe) or trying to impress people on the dyno or at the track(definitely!) but not in DD mode. Cummins engines can move a lot more fuel and make a lot more power than a stock IDI yet they tend to still get better fuel economy. Power capability does not relate to fuel efficiency. Actually USING the power to do work does.
Isn't it insane to have the same conversation over and over again with the end result being the same thing. Nothing. I'm pretty sure that's the definition of insanity. And while you MIGHT be considered insane to spend 3 or 4 grand on an IDI, by definition you would NOT be, because you did something and had a different outcome. Now lets just say for a moment that I built a motor with a super moose pump and super moose misters and it put out 300 RWHP. Let's assume that actually exists. Would these conversations continue, or would they change in anyway? I'm really curious about that. Or would it be the "hypermax has a $17,000 kit you can buy" kind of discussion. Which takes us back to insanity again, where nothing happens. 
But, again, the fuel he needs is still up in the air. The rod work, C-ringing the cylinder decks, special hypermax headgaskets, sleeving 7.3 down to 6.9, studs, custom pistons, 75mm S400 turbo, and so on.... But, the fueling is not solved yet.
