While the OEMs overwhelmingly opt for paper air filters, cotton gauze filters are a staple of aftermarket induction systems. So what makes the cotton gauze medium so much more conducive to airflow?

The most basic of basic upgrades, in our opinion, is an intake. So cheap that you can't afford not to do it, and easily one of the best upgrades you can do. But do they really make power? Does a ...

The first step in getting more performance out of an engine is to let it breathe easier, and if there’s one thing Harley-Davidson owners like, it’s the distinctive sound of their V-Twin rumbling ...

One piece of car maintenance that often gets overlooked is changing the air filter. Owning a truly thankless job, this piece of equipment is responsible for keeping the air entering your car's engine ...

Holley's attention to detail is noteworthy. From the durable roto-molded housing and tubing to the unique, patent-pending "Slip-Seal" housing/filter/tube interface, it's clear that Holley did their ...