GrimmSpeed Post MAF Hose Kit - Red - 2015-2021 Subaru WRX
Enhancing Airflow and Structural Integrity: GrimmSpeed Post MAF Hoses Our Post MAF Hose construction elevates beyond OE standards, boasting two key features for optimal performance: 1. Smooth Inner Surface: The GrimmSpeed Post MAF Hoses feature a smooth inner surface, eliminating the pockets found in OE structural corrugated folds. Crafted from 4-ply silicone, our hoses surpass competitors by integrating an internal stainless steel wire along their length. This dual construction ensures flexibility while retaining robust structural properties, preventing collapse under vacuum and maximizing airflow efficiency. 2. Tapered End Portions: Addressing the critical details, our hoses incorporate tapered end portions to match the inner diameter of the OEM air box and turbo inlet. Mismatched diameters in other offerings create disruptive steps, causing airflow interruptions and generating vortexes in the post MAF hoses. GrimmSpeed's design is meticulously crafted to mitigate these issues, ensur