Yahoo Autos Here's Why a Variable Intake Manifold Is the Best of Both Worlds
In a naturally aspirated engine, as air comes in through the intake and passes through the throttle body, you've traditionally had two setups for what happens next. Using longer, narrower intake runners results in the engine making more low-end power. And if you use shorter, wider intake runners, the engine ends up with more high-end power. Sounds simple enough.
But if you can use an intake manifold that can be both, then you don't have to choose. That's where variable intake manifolds come in. It's the sort of compromise that isn't actually compromised.
Engineering Explained walks through exactly why and how this works in his latest video. Then, he explains the process of intake manifold tuning and how important it is for maximizing horsepower across a wider range. There's way more to this than you might think. . . just like nearly any mechanical part on a car.
It's a dense subject, but it's also pretty cool. We highly recommend checking it out.
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