AFE engineers their products through 3d scanning and print technology followed by Dyno testing. For 2015 their big push on intakes will be seen in the 2015 Mustang and F150 Ecofuel systems.
Injen has been a long-time favorite of mine and for 2015 they are releasing their Roto molded Evolution Air Intake kits which feature meters to identify when the intakes need servicing.
K&N had an ingenious idea to push their dry filter technology to cabin air filters. They reported they would be expanding the availability of the product in various Autozone locations throughout the U.S. The filters can be found online even if the particular Autozone doesn’t stock the item.