Mishimoto MMAI-WRX-15BP Polished Cold Air Intake for 2015–2021 Subaru WRX

The Mishimoto MMAI-WRX-15BP Polished Cold Air Intake is engineered to significantly increase power, improve airflow, and enhance turbocharger sound for the 2015–2021 Subaru WRX. Featuring a free-flowing intake design, reinforced silicone induction hoses, and an optional enclosed airbox, this system replaces the restrictive factory intake for noticeable gains in horsepower, torque, and responsiveness.

Dyno results show maximum increases of up to 33 whp and 30 wtq on the stock tune, with peak gains of 28 whp and 21 wtq. With proper tuning and 93-octane fuel, this intake is capable of gains up to 70 whp and 70 wtq while maintaining safe air-fuel ratios, making it one of the most impactful bolt-on upgrades for the FA20DIT platform.

The polished aluminum intake piping is paired with a wire-reinforced silicone lower induction hose designed to prevent collapse under suction and boost. The high-flow oiled air filter offers increased filtration surface area over stock and is fully serviceable for lifetime use. The included airbox helps reduce heat-soak while maintaining a clean, OEM-like engine bay appearance.

This intake produces an aggressive turbo spool sound, pronounced BPV noise, and a stronger induction tone under load. Designed in Delaware, made in the USA, and backed by Mishimoto's Lifetime Warranty, this system offers top-tier performance and reliability.

Key Features and Benefits

• Direct fit for 2015–2021 Subaru WRX FA20DIT

• Maximum gains up to 33 whp / 30 wtq on stock tune

• Peak gains up to 28 whp / 21 wtq

• Gains up to 70 whp / 70 wtq with a tune (93 octane)

• Polished aluminum intake piping for a clean, performance look

• Wire-reinforced silicone hose prevents collapse under boost

• Aggressive turbo and BPV sound under acceleration

• Includes airbox to reduce heat-soak; retains stock ducting

• High-flow oiled filter increases filtration surface area

• Fully serviceable filter for lifetime use

• Installs in about one hour

• Designed in Delaware; filter made in the USA

• Available in polished, wrinkle black, or wrinkle red finishes

• Mishimoto Lifetime Warranty

Package Contents

• (2) Aluminum Intake Pipes (Polished)

• (1) 90° Silicone Upper Hose

• (1) Silicone Lower Hose (wire-reinforced)

• (1) High-Flow Oiled Filter

• Airbox with Protective Edging

• Hardware

• Mishimoto Lifetime Warranty

Technical Specs / Material Info

• Intake Pipe Material: Aluminum (polished finish)

• Filter Media: Oiled, serviceable

• Hose Construction: Multi-layer silicone with reinforcement

• Airbox: Powder-coated steel with edging

• Warranty: Mishimoto Lifetime Warranty

Installation Info

• Direct bolt-on installation

• No tuning required (tuning optional for maximum gains)

• Installs in ~1 hour

• Uses factory cold-air ducting

Special Notes / Emissions Info

• Not CARB exempt

• Not legal for use in California

• Fits WRX only — does not fit STI