Intake is not finished and no idea about pressure drop, but it makes car accelerate a bit quicker. Is there any hp increase, may be.Correct me if I am wrong but it looks looks like your intakes are behind the radiator/fan area and are taking in hot air.
The standard routing takes cool are from a forward location.
Are those green things your air filters? What kind of material are they and how much dust, etc. do they collect?
What is the pressure drop through them? You can measure that with simple water manometer using small plastic tubing.