Header, Intake, & Exhaust - forced air induction how?

Someone told me that forced air induction works and that it adds up to ten horses is that true if so then how do i do that? Whats is needed to make it work?

forced air induction = turbocharging/supercharging

natural aspirated = non turbocharged/supercharged

I think he is probably talking about ram air induction. It involves putting a scoop of some sort outside of the engine bay and using vehicle speed to "force" air into the intake. It's not gonna give you any positive manifold pressure but I have heard claims of +10hp on V8 cars, never seen one on a Civic though except those turbo funnel velocity stack things on the big boys' cars.