Gain up to 20 whp & 18 wtq with the new Mishimoto Performance Air Intake. Engineered for the 2015+ Subaru STI, it includes all components to replace the restrictive factory airbox. Our engineers spent months fine-tuning the design for increased performance. This dyno-proven intake maintains safe AFRs & is perfect for street/autocross. Featuring a mandrel-bent aluminum pipe, heat shield, and a free-flowing filter with 16% more surface area. Includes silicone couplers, clamps, hardware & rubber sound symposer cap. Enjoy a noticeable horsepower gain and an aggressive, rich intake tone. Made in USA with a Lifetime Warranty.