Provide maximum, unrestricted airflow to your 2015-2018 STI with the Mishimoto 2015-2018 Subaru STI Race Intake. Mishimoto pulled out all of the stops with this intake, featuring a 3" short-ram intake pipe, designed with large turbochargers and maximum airflow in mind. Designed to fit on either your stock or Mishimoto turbo inlet tube, this race intake is also compatible with most aftermarket front-mount intercooler kits. Due to the size of the intake pipe, a re-tune of your vehicle's ECU is necessary to keep your engine running safe and extracting the most horsepower from the added airflow. The intake pipe also features a CNC-machined air diverter to provide consistent airflow readings to the MAF sensor, making re-tuning quick and easy. The intake pipe is available in a polished or wrinkle black finish. A 3" diameter Mishimoto high-flow air filter is also included which features a built-in velocity stack for maximum flow. The performance race intake will give your car a highly aggressive tone under acceleration. An optional airbox is available for this intake, designed to keep unwanted hot engine air away from the filter. The airbox is designed to re-use the stock intake duct to provide fresh outside air to the filter, also retaining a stock-like appearance in your engine bay. This intake comes with all of the necessary clamps, couplers, hardware, and protective rubber edging for a clean install. A rubber cap is provided to cover up your unused sound symposer housing, and keep all of that great engine sound outside of your cabin. For added cooling and performance on and off the track, pair this intake with the Mishimoto Subaru Impreza WRX STI Performance Aluminum Radiator, Subaru WRX STI Performance Top-Mount Intercooler Kit, and Subaru WRX STI Silicone Induction Hose. The Mishimoto Subaru WRX/STI Race Intake includes the Mishimoto Lifetime Warranty.Features:Direct fit for 2015-2018 Subaru STIInstalls in under 30 minutesLarger-diameter intake pipe for large turbochargers and more aggressive engine tunesExclusive optional airbox retains stock-like appearance and uses stock air-intake snorkelProvides highly aggressive intake tone under accelerationCNC-machined air diverter helps maintain reliable and consistent MAF readingsWorks with stock and aftermarket induction hosesFits with front-mount intercooler kitsDesigned in Delaware, USA and filter made in USAMishimoto Lifetime WarrantyPipe Diameter: 3"Diversion Plate Material: SteelAirbox Material: SteelOiled Filter: 38 g of oil on filterPipe Material: Mandrel-Bent AluminumChassis Codes: VAEngine Codes: EJ257Oil Color: RedAir Filter Part Number: MMAF-3006Purchase Includes:(1) Aluminum Intake Pipe(1) High-Flow, Oiled Filter(1) Optional Airbox w/ Protective Edging(1) Silicone Reduction Coupler(1) Sound Generator CapHardwareFitment/s:Subaru STI 2015Note/s:This intake cannot be used with the stock ECU programming. It is highly recommended that the customer is able to retune the vehicle's ECU after installing the intake. Power gains will vary depending on the type of ECU tune that is applied to the vehicle.The optional airbox retains a stock-like appearance and it designed to work with the stock air intake duct.Filter re-oil is not included in the lifetime warranty.