Fitment Information: This kit fits 2008 - 2014 Subaru WRX and 2008 - 2021 Subaru STI (15 - 17 STI without OEM Sound Tube Delete). Note: If you have a 2015 - 2017 Subaru STI with the factory sound generator tube and want to remove it, you can buy the Grimmspeed Post MAF Hose Kit for Subaru STI with OEM Sound Tube 2015 - 2017 and GrimmSpeed Sound Plug Delete, or choose the 18+ STI hose to get rid of the sound tube. Factory post MAF hoses often have performance issues. The new Grimmspeed Post MAF Hose Kit not only looks great but also fixes these flaws. Our hose construction enhances airflow in two key ways. First, it has a smooth inner surface, eliminating the pockets in the OE corrugated folds. Made of 4 - ply reinforced silicone, it's flexible, durable, and won't collapse under vacuum. Second, the tapered center portion ensures the inner diameter matches the OEM air box and turbo inlet, preventing airflow disruptions. Quick Specs: 4 - Ply Reinforced Silicone (available in red or black), OEM Fitment for easy install without modification or tuning, Seamless Flow with CAD - optimized design, High - Quality Breeze Hose Clamps included, and a GrimmSpeed Logo to show your brand love!
Using the Grimmspeed Post MAF Hose Kit is a breeze. First, make sure your car model is one of the compatible ones (2008 - 2014 Subaru WRX or 2008 - 2021 Subaru STI). Remove the old factory post MAF hose from your engine bay. Then, take the new hose from the kit and carefully install it, using the high - quality breeze hose clamps included. No modification or tuning is required, so it should fit right in. When it comes to maintenance, check the hose regularly for any signs of wear or damage. The 4 - ply reinforced silicone is very durable, but it's still a good idea to give it a once - over every few months. If you notice any issues, like cracks or leaks, replace the hose as soon as possible. Also, keep the hose clean by wiping it down with a mild soap and water solution. That's all there is to it! Enjoy the improved airflow and performance of your new Grimmspeed hose.
