Injen is a company that makes some of the best air intakes on the market. There are many factors to consider when purchasing an air intake, such as: how well it flows, how easy it is to install, and how much power it can add to your engine. Injen has a reputation for making high quality air intakes that perform well and are relatively easy to install. Many Injen air intakes are also dyno-tested to show the power gains they offer. So, if you're looking for a good air intake, Injen is definitely a brand to consider.