If you need that explaining - you're a dumb-ass .

Why does the principal change - just because it is a road car?

You may find that some current MODERN production cars will benefit from a complete re-think of the intake system, as NVH / financial implications mean that the intake system is compromised in the favour of cheapest / quietest route.

Fortunately this doesn't apply to Cosworths, as the car was designed with homologation in mind (any other car built like this will also have the same design ethos), so everything is about efficiency first, as they weren't allowed to change certain things.

Looking at a race car where effciency of the intake system is a priority - you will ALWAYS see that it is encased in some form of airbox.