If you are looking for the best possible technology in air filtration with increased engine performance, we recommend the use of the JR direct intake kit with washable and reusable air filters. This direct intake kit is suitable for installation in the following vehicles:
Porsche 911 Carrera 2 / Carrera 4 (1989-1994)
Porsche 964 RS (1992)
JR direct intake kits are designed to ensure a higher air flow than original filters. JR direct intake kits minimize the loss of relative air flow pressure passing through the air filter; this set-up guarantees the best conditions to take full advantage of maximum engine power together with optimum filtration.
JR air filters are made of 4 layers of cotton, which are held together by two outer layers of steel wire mesh. To prevent rust, the steel mesh is galvanized and plastic-coated, giving it a double protection. JR filters are impregnated at the factory with a special type of oil which also serves as an additional filtration element. Because of the oil, the dust is retained on the outside surface of the filter. A simple rinse with intervals of between 30 000 and 100 000 km depending on the driving environment for your Porsche, is enough to bring back the JR cotton filter to a “like new” condition.
A recent evaluation carried out under ISO 5001.1988 has shown that JR filters do keep out 99% of airborne particles up to the 2.8 micron size (that is, 2.8/1000 of one millimetre). Moreover, the airflow through the JR reusable cotton filter is far greater than the airflow which passes through the OEM paper air filter. |