Injen 2015 Subaru STI 2.5L 4cyl Evolution Intake w/ Ram Air Scoop

This is the Injen Evolution Cold Air Intake System, part number EVO1206, specifically made for your 2015-2017 Subaru WRX STI with the 2.5L turbo engine. This system is designed to replace your stock airbox and intake tubing to help your engine breathe easier, which can lead to noticeable improvements in power and throttle response. It's a well-built upgrade that aims to get more cool air into your turbocharger.

The system features a two-piece roto-molded housing that incorporates a boost plenum and a functional ram air scoop. This design works to capture as much cool outside air as possible, feeding it directly to the engine. The intake tube itself is made from 6061 aluminum, custom-tuned on Injen's dyno using their patented Air Fusion and MR technology. This tuning is crucial because it helps maintain safe fuel trim levels with the stock ECU, meaning you typically won't need an aftermarket tune to see gains. The included SuperNano-Web dry air filter is large and designed to seal tightly within the housing, increasing the overall air volume available to the engine.

Installation is designed to be straightforward, with stainless steel band clamps and automotive-grade silicone couplers ensuring a secure fit. Injen has dyno-proven gains of up to 26 additional horsepower and 34 ft-lbs of torque with this setup. While this intake offers a significant performance improvement, please note that it is not CARB exempt and cannot be shipped to California or used on vehicles registered there.