AIR FILTRATION TESTING - NFRC

Air Filtration Testing - NFRC

Air Filtration Testing - NFRC

As car enthusiasts we are always looking for ways to increase the power of our engines. Many aftermarket companies now manufacture and deliver high performance air filters. Most all claim an increased energy through increased airflow and better filtration gain as well. In this test, many air filters will be compared. Personally, I've owned several brands of performance cars. This particular test is carried out using a 1992 Mazda Miata with a bone stock engine (I can not wait to modify themselves). I have many different parts of turbocharger components collected in hopes of modifying the Miata. Air filters are a Napa gold test, AMSOIL two stage foam, Jackson Racing two stages, a fibrous Baldwin, a K & N, and a factory replacement Mazda.

Air filters will be mounted on the stock air box and filtration tested by placing a second filter (after filter if you will) just before the air flow meter. A picture, as we shall see, is worth a thousand words and shows this configuration. A water manometer is used to test the pressure drop across each filter. Obviously, filters with lower pressure drop flow better, and have the potential to produce more power since the engine really needs to increase air flow. The pressure drop across each filter is measured in inches of H2O (water). The pressure drop will be of the atmosphere using the value system Miata induction air box just after the filter. 1 psi = 27.7 inches of water as a reference.

I have a degree in mechanical engineering and am Currently pursuing a master's in engineering management. I've been in cars all my life, and will obtain certification as an ASE certified mechanic this fall (for fun). My father ...