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Understand the balance AMSOIL is recognized for Lubrication Concepts - A brief understanding of oil functions, classifications and additives. Stock or use AMSOIL in your Business - Commercial Accounts Maximizing Performance in your Ford 7.2 or 6.0 Powerstroke Maximizing Performance in your Dodge Cummins Manual Transmission GL-4 (MTG) for Easier ShiftingĪMSOIL's Product and change interval chart New Product Selection and Change Interval Chart It produced a 2-3 percent improvement in acceleration time versus the stock unit.Become a AMSOIL Dealer and we'll send customers your way. Like on the dyno, he sees incremental increases, with the K&N filter coming out on top. 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. 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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