GrimmSpeed Post MAF Hose Kit Red w/ OEM Sound Generator Tube Delete - 2008-2014 Subaru WRX / STI / 2018-2021 STI

RallySport Direct proudly carries a great selection of quality aftermarket performance products brought to you by GrimmSpeed.

This is the GrimmSpeed Post MAF Hose Kit. This post-MAF hose combines durable multi-layer silicone fiber and smooth interior walls and CAD technology that makes for an excellent high-performance upgrade over the factory OEM post-MAF hose. This is achieved by eliminating the pockets and corrugated folds in the OEM design to improve the overall flow and throttle response.

TECHNICAL:

• Reinforced silicone construction
• The design removes the OEM corrugated folds and the pockets to create a smooth interior wall
• Designed with a tapered center portion to make sure the diameter matches the OEM air box and turbo inlet
• The design eliminates mismatched hose diameter which can create steps that will cause airflow trajectories and small vortexes
• The shape of the hose was optimized through CAD Flow Simulation Testing to generate a smoother flow path
• The removal of the corrugated folds adds a significant reduction in vorticity to calculate the highest flow efficiency
• The tapered center portion in the design has an emphasis on vorticity to reduce as much turbulence as possible

DETAILS:

• Red finish
• 4-ply reinforced silicone hose construction
• CAD-optimized center section to match airbox and inlet for seamless flow
• GrimmSpeed logo stamped on the airbox side of the hose
• Includes Breeze hose clamps for the installation

NOTE:

• Designed with OEM Sound Tube Generator Delete