Post MAF Hose Kit - Black, Sound Generator Tube Provision

• 2015-2017 Subaru | WRX STI

The GrimmSpeed Post MAF Hose Kit (125013, Black, with 2015-17 STI sound generator tube provision) replaces the factory post-MAF hose with a hose that looks better and fixes the flaws of its OE counterpart. GrimmSpeed's construction improves flow with two main features:

• A smooth inner surface that removes the pockets of the OE corrugated folds. The GrimmSpeed hose is made of reinforced silicone, which is flexible yet structurally strong, so it is easy to install without worrying about collapsing under vacuum.
• A tapered center portion so the inner diameter matches the OEM air box and turbo inlet, avoiding steps that interrupt airflow and create small vortexes.

GrimmSpeed states that removing the corrugated folds allows a minimal curve transition and a smoother transition from the air box to the turbo inlet, with reduced turbulence for a more consistent air supply to the turbo. Coupled with the GrimmSpeed DRY-CON Panel Air Filter, GrimmSpeed calls it the best way to maximize your factory intake system until it is time to upgrade to a full GrimmSpeed intake.

Quick specs (per GrimmSpeed)

• 4-ply reinforced silicone, extremely durable (black)
• OEM fitment: easy install, no modification or tuning required
• Seamless flow: CAD optimized design
• High quality Breeze hose clamps included
• GrimmSpeed logo

Fitment (per GrimmSpeed, this option)

• 2015-2017 Subaru STI (with OEM sound generator tube installed)

Q: Which vehicles does 125013 fit?
A: GrimmSpeed lists the 2015-2017 Subaru STI with the OEM sound generator tube installed.

Q: What is the sound generator tube provision?
A: This version includes the provision for the 2015-2017 STI factory sound generator tube, so the OEM tube can stay installed.

Q: Is tuning required?
A: No. GrimmSpeed states OEM fitment with no modification or tuning required.

Q: Are clamps included?
A: Yes. GrimmSpeed states high quality Breeze hose clamps are included.

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