What I read in another forum about this, is leave it alone, it needs as much air as possibleThe bottom opening for turbo intercooler and condenser is wide open to stone chips, rocks, tar and other debris that can fly in there with highway driving.
would it be a good idea to tie wrap some gutter guard in front of it? there should still be airflow but would block larger rocks from doing damage.
I know my 2006 civic condenser looked like Swiss cheese from 170k miles. it caused the AC to leak out and many people had issues with it.
see attached - I would just cut into two strips, one for top, and one for bottom and use black tie wraps to secure it