Anything that increases turbulence will make a better fuel air mixture. most of this is junk though. And internal drag should be limited. Anything reducing flow reduces horsepower. Too free of flowing induction will not have enough flow at low end however and kills low end torque. I say pick up a cam, headers or a turbo, or even just a high flow filter. beyond that tin is cheap as are tin snips and if you found a good middle ground then all the better.
