Foam air filters are often used in high-performance vehicles due to their superior ability to trap dirt, debris, and other contaminants. Compared to paper and other filtering technologies, foam filters are more effective. But are they better than standard OEM filters made of special quality paper? And how do they compare to K&N filters?When it comes to air filters, there are three main types available on the market: standard OEM paper filters, aftermarket foam filters, and K&N filters. The latter two are often used in high-performance vehicles because they offer better filtration and dirt-retaining capacity.
In cities with high levels of air pollution, such as Beijing, Delhi, and Los Angeles, TRAP can cause poor air visibility and dangerous atmospheric conditions. This is why it's important to clean or replace your air filter at every regular service on your car. K&N filters are pleated to increase their filtering capacity and hold more dirt than standard OEM paper filters. This means that you can get more miles before you have to wash them. However, if you haven't done anything to take advantage of a more freely flowing air filter, such as installing cams or a racing exhaust, and permanently adjusting your fuel consumption, you won't get any noticeable performance by switching to an aftermarket filter. Another reason why people install aftermarket filters is to get more power out of their engine.
But as the filter accumulates more dirt, resistance to air movement increases and fewer pores remain open. This leads to decreased power and fuel economy. It's also important to note that some companies offer products that mimic the appearance of K&N filters but don't offer the same level of quality and protection. So if you're looking for an air filter for your vehicle, it's important to consider all the factors mentioned above. Foam air filters may be better than standard OEM paper filters, but K&N filters outperform both quite significantly.