When it was first developed in 1962, the K and N Filtercharger was a true design breakthrough in air filtration technology. It produced a 2-3 percent improvement in acceleration time versus the stock unit. K&N Replacement Air Filters - More air flow, increased horsepower, long lasting performance - even after 35 years, the K&N Filtercharger is still on the cutting edge of air filtration technology. Like on the dyno, he sees incremental increases, with the K&N filter coming out on top. One of the easiest and most cost-effective upgrades for your vehicle for quick performance gains SAVES MONEY: K&N high-flow replacement air filters will. of torque, or around 2.6 percent and 3.7 percent, respectively).įenske also tests out the filters in a real-world environment, testing acceleration times between the four candidates.
He finds that on the dyno, the aftermarket filters do in fact make more than the OEM unit, with the most gains produced by the K&N filter (around four horsepower and five lb.-ft. But not much.įenske put together a dyno test using his personal Subaru Crosstrek, comparing four different air filters: The dirty OEM item already the car, a new OEM filter, a cheaper aftermarket non-performance filter sold by CarQuest, and a high-flow performance filter made by K&N. Well, Jason Fenske of Engineering Explained put these claims to the test, and it turns out that yes, high-performance air filters do actually yield more power. But being so cheap and easy to install, it's hard to believe these filters actually produce any observable gains. K&Ns replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. If you've ever been to an auto parts store, you've probably seen air filter boxes that claim extra power and more torque over the factory filter.
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