Bmc sport air filters were originally developed in association with the ferrari f1 team. Bmc is one of the most recognized brands in the automotive industry and is the most successful filter in many types of racing. Oem filters only require a total particle filtration efficiency up to a minimum size of 10 microns. Oem air filters function primarily to protect the engine, so they are cost effectively produced in paper. Paper filters have high resistance to airflow that reduces the inlet pressure and consequently engine performance. A bmc sport filter contains an outer epoxy coated alloy mesh with internal layers of cotton gauze that have been immersed in a low viscosity oil. That technique ensures protection fro...(choose a part on the right to read more)