Ea2 1 1 Why is the engine intake like this?

In order to improve the power of EA2 1 1 naturally aspirated engine.

Use a large flow air grille to make the air intake smoother, and modify the straight throat throttle. It can also improve the efficiency of the intake and exhaust mechanism, such as changing the cam curve, and even using the electro-hydraulic cam-less valve train to extend the valve opening and opening time. The power can also be improved by adjusting the parameter settings of the electronic control system.