What is this witchcraft ?

What is this witchcraft ? - Ask Car Throttle

Ok , so you all heard of VTEC kicks in yooooo memes , but after searches I found out that VTEC is just some sort of valves that opens when you get to high rpm’s and gives you all your power.

So VTEC just saves fuel when you’re in city , and all the power comes when you really need it.

Amirite or i’m saying nonsense ?