This Cobb intake and airbox combo is designed for 2004 - 2007 Subaru STI, 2002 - 2007 Subaru WRX, and 2004 - 2008 Subaru Forester XT. It sets the standard for MAF - style intakes. With a velocity stack, airflow straighteners, and a composite body, it delivers ultimate performance. You can use the Subaru factory snorkel to feed cold air to the intake. The SF Airbox turns the intake into a cold - air intake with an OEM look and fit.
Features include a composite intake body for heat rejection, a pre - oiled filter, an integrated velocity stack, integrated airflow straighteners, 16 - gauge aluminum construction, C.A.R.B. certification, intermediate installation effort, an installation guide, and no tuning required.
This system combines the benefits of short - ram and cold - air intakes without the drawbacks. It uses unique features to maintain optimal air flow and reduce turbulence that can cause engine management issues. The custom conical cloth air - filter element and CFD - designed velocity stack lead to a special air - flow straightener grid. This grid smooths the incoming air for accurate readings by the Mass Air Flow sensor, eliminating 'dead spots' caused by turbulence. The one - piece high - temperature plastic composite design not only saves weight but also has excellent heat - rejection properties, keeping intake air cooler. The SF Air Box adds cold - air intake benefits, directing cold air from the front grill and preventing hot engine - bay air from entering. It also separates rainwater from the intake air, avoiding water - ingestion problems.
Using this intake and airbox is quite straightforward. First, refer to the included installation guide for step - by - step instructions. It requires an intermediate level of installation effort, so if you're not confident, it's a good idea to get help from a professional.
When it comes to use, there's no need for tuning, so you can install it and start enjoying improved performance right away.
For maintenance, regularly check the pre - oiled filter. If it gets dirty, clean it according to the filter's cleaning instructions. Also, inspect the composite intake body and the aluminum construction for any signs of damage.
Keep in mind that this product is C.A.R.B. certified, which means it meets certain environmental standards. Make sure to follow all local laws and regulations when using it. And be aware that the unique design helps prevent water ingestion, but try to avoid driving through extremely deep water to be on the safe side.
