Get ready to rev up your senses with the Injen SP1584 intake! As you unleash your Honda Civic Si and let the turbo spool, you'll be greeted by an exciting intake growl. The heart of this intake lies in its 6061 - T6 aluminum air intake tube, which offers a smooth, uninterrupted path for highly efficient airflow. Our engineers have carefully crafted this intake to deliver top - notch safe power. It also has a clean and appealing look that will turn heads every time you pop the hood. Not only does it boost power significantly, but the Injen team has also made sure to maintain a safe Air fuel (A/F) ratio across the power band. The SP1584 intake comes with a fully serviceable Injen SuperNano - Web dry air filter. This filter has a larger surface area, allowing for better airflow and unbeatable filtration. You can really hear and feel the power this intake provides! On our dyno, the SP1584 added an amazing 23 additional horsepower and 21 pound - feet of tire - scorching torque. It produces an aggressive and throaty tone that's unmatched in the aftermarket, and you'll love it every time you hit the accelerator. Want to make your intake unique? Injen offers this intake system in three great finishes: SP1584BLK (Black), SP1584P (Polished), and SP1584WR (Wrinkle Red). And to sweeten the deal, this SP CAI kit comes with the unbeatable Injen Technology limited Lifetime Warranty! This part fits 2017 - 2020 Honda Civic Si and various 2021 Toyota Tundra models including 1794 Edition, Limited, Platinum, SR, SR5, Trail, and TRD Pro.












Using the Injen SP1584 intake is easy. First, make sure your vehicle is turned off and cooled down. Then, carefully install the intake following the included instructions. Once installed, start your engine and enjoy the enhanced performance. When it comes to maintenance, regularly check the Injen SuperNano - Web dry air filter. If it looks dirty, it can be serviced according to the cleaning guide provided. This will ensure that the filter continues to provide good airflow and filtration. Also, keep an eye on the overall intake system for any signs of damage or loose connections. If you notice anything unusual, have it checked out by a professional. Remember, this intake comes with a limited lifetime warranty, so follow the usage and maintenance guidelines to keep it valid.