Is it necessary to replace the air intake grille with a grille?

If you are not short of money and want to vomit when you look at the current air intake grille, and you have consulted the local vehicle inspection department, it will not affect the vehicle inspection, so change it quickly. The metal grille is really more atmospheric, otherwise you'd better not change it, because it won't affect the performance of the car, but it will be understood as a joke. I hope this answer is helpful to you.