HKS SQV4 BOV Blow Off Valve for Subaru Impreza STI GRB / GRF / GVB / GVF

Elevate the performance and sound of your turbocharged Subaru with the HKS Super SQV (Sequential Blow Off Valve). The epitome of Japanese engineering, this blow off valve promises unmatched responsiveness across varying boost pressures and a symphony of turbo sounds that’s unmistakably HKS.

Main Features:

• Distinctive Aluminum Body: Adorned in a sleek silver coat, this die-cast aluminum body isn’t just a treat for the eyes, it ensures long-lasting performance amidst intense engine conditions.
• Robust Metal Valve: The heart of the system. Die-cast metal construction offers both beauty and reliability during operations.
• Triple Fin Sound Design: Engineered with Triple Fins to deliver that iconic aggressive turbo sound. For those looking to personalize the note, an additional Round Fin is available separately.

Unparalleled Valve Dynamics:

1. Pull-Type Relief Valve: Unlike conventional push-type valves, the Pull-Type design offers refined relief dynamics suitable for a wide array of boost pressures.
2. Sequential Dual Valve Structure:
   • Primary Valve: On throttle lift-off, this valve takes charge, rapidly venting initial excess boost.
   • Secondary Valve: Works in tandem with the primary valve to ensure efficient blow-off across all boost levels.

How It Works:

• Accelerator ON: Both valves remain closed. The increasing chamber C pressure ensures that as the boost grows, the valves are reinforced against any leakage.
• Accelerator OFF (Primary Valve): A pressure disparity between chambers A & B activates the primary valve, resulting in an initial boost discharge.
• Accelerator OFF (Secondary Valve): At peak pressure difference, the primary valve triggers the secondary, culminating in a secondary boost release.

Universal Turbo Compatibility: Whether your Subaru is in its stock avatar or has been tuned to the hilt, the Super SQV will seamlessly integrate without any boost leak.

Say goodbye to the constraints of traditional push-type blow off valves. With the HKS Super SQV, you get adaptability across boost settings, ensuring your turbo always sings the right note. Uncompromised performance, unmistakable sound.