[bobcowan]

The big "trick" is EFI. A carb is not a bad choice. But it will never be spot on. A good tuner on a road force dyno can get it pretty close, but never spot on. There are just too many variables in road driving.

Closed loop EFI, OTOH, will keep mixture and timing where it needs to be all the time. Which also means that the engine will make more power under the curve than a carb will.

A carb is like a shot gun. EFI is like a sniper rifle.

In the end, though, big cubes will consume big fuel. No getting around that.