This Cobb Tuning Post MAF Hose in black is a great upgrade for your Subaru. It fits Subaru WRX from 2002 - 2007, Subaru STI (Sedan) from 2004 - 2007, and Subaru Forester XT from 2004 - 2007 (for SF intake use only). The hose is made of 4 - Ply Steel Reinforced Silicone, which replaces the stock corrugated OEM tube. It helps decrease turbulence in the intake tract, making your turbo happier. The COBB logo is pad - printed on it. It works with the stock airbox or COBB SF Intake (WRX and STI only; fits FXT only with the SF intake). Installation is easy, and an installation guide is provided. The hose combines a smart appearance with turbulence - taming features. It replaces an ugly OEM part in the engine bay. Its sleek exterior looks good, and the smooth interior is airflow - friendly.

Using your Cobb Tuning Post MAF Hose is straightforward. First, refer to the provided installation guide. It will walk you through the steps to replace the stock corrugated tube with this new hose. Make sure you are using it with the appropriate intake setup as mentioned in the fitment details. For WRX and STI, it can work with the stock airbox or COBB SF Intake. For Forester XT, it only fits with the SF intake. As for maintenance, regularly check the hose for any signs of wear or damage. You can clean it gently with a mild soap and water solution. Avoid using harsh chemicals as they may damage the silicone. If you notice any cracks or leaks, replace the hose immediately to ensure optimal performance of your vehicle.