Description

The HKS Super SQV4 Kit is a high-performance blow-off valve (BOV) system. It is designed to replace the restrictive factory diverter valves on the Nissan GT-R R35. This system offers two distinct installation options. You can choose a full hard-pipe kit for maximum presence and sound, or a direct factory valve replacement.

It provides improved throttle response and reliable boost pressure management. Additionally, it delivers the iconic, high-frequency “flutter” sound of the legendary Super SQV. Furthermore, it is crafted with buffed aluminum piping for a stunning dress-up effect. This system enhances both the performance and auditory character of the twin-turbo VR38DETT engine.

Product Overview & Purpose

The factory bypass valves recirculate pressurized air back into the intake system. Replacing them with a high-flow BOV like the Super SQV4 offers several benefits. Specifically, it reduces turbo compressor surge and can improve throttle response between shifts.

Moreover, it allows for a distinctive atmospheric venting sound. HKS provides two paths: a complete hard-pipe upgrade for the ultimate visual and auditory statement. Alternatively, there is a simpler direct swap for those prioritizing sound with an OEM+ look.

Product Highlights

🎵 Iconic Super SQV Sound & Dual Configurability

• Atmospheric Vent (VTA): When installed with the included 3-spoke fin and configured to vent to atmosphere, the Super SQV4 produces its legendary crisp, high-frequency “flutter” sound that is clearly audible inside and outside the car, delivering an exhilarating auditory feedback with every shift.

• Recirculation (Suction Return): Both kits can be configured to recirculate vented air back into the intake (like stock) for a more subdued operation, making the system versatile for different preferences and noise regulations.

🔧 Two Installation Options

1. Chamber Pipe Replacement Kit (71008-AN027): The ultimate upgrade. Replaces the stock rubber hoses and cast iron pipes with custom, buffed aluminum hard pipes for a smoother flow path and a stunning visual impact in the engine bay. Offers the most dramatic presence and sound.

2. Factory Valve Replacement Kit (71008-AN029): A direct, OEM-location swap for the stock air bypass valves. Provides the iconic SQV sound and improved performance with a more stealthy, integrated appearance using the factory routing.

⚙️ Performance & Reliability

• Improved Throttle Response: By efficiently venting boost pressure during throttle closure, the SQV4 can reduce turbo lag and improve transient response.

• Prevents Compressor Surge: Protects the turbochargers from damaging pressure waves.

• Proven Compatibility: HKS testing confirms no engine stalling or drivability issues post-installation, ensuring reliable operation.

✨ Premium Engine Bay Aesthetics (Hard-Pipe Kit)
The Chamber Pipe Replacement Kit features beautifully buffed and polished aluminum pipes. These pipes transform the engine bay with a clean, motorsport-inspired look. Indeed, they make it a standout dress-up component.

Technical Specifications & Options

• Product Name: Super SQV4 Kit

• Model Codes:

  • Full Hard-Pipe Kit: 71008-AN027 (Chamber pipe replacement)

  • Direct Replacement Kit: 71008-AN029 (Factory valve replacement)

• Compatibility: Nissan GT-R R35 (VR38DETT, December 2007 onward).

• Valve: HKS Super SQV4 (Silver).

• Key Feature: Configurable for Atmospheric Vent or Recirculation.

• Included: 3-spoke fin for atmospheric sound.

Performance Philosophy

• Goal: To enhance the driving experience with improved turbo response and the option for an exhilarating auditory signature, while offering a choice between a bold, show-stopping installation or a subtle, performance-focused upgrade. The focus is on sensory engagement, reliability, and quality craftsmanship.

• Focus: The definitive BOV upgrade for the GT-R enthusiast. It is designed for owners who want the iconic HKS sound, improved throttle feel, and (with the hard-pipe kit) a transformative visual upgrade under the hood.

Installation & Usage Notes

• 🔧 Professional Installation Recommended
  Installation, particularly for the hard-pipe kit, involves working with boost pipes and requires proper sealing and secure clamping. Professional installation is recommended.

• ⚙️ Tuning Considerations
  While the kits are designed for plug-and-play operation, vehicles with aggressive tunes or modified MAF setups may require minor ECU adjustments for optimal drivability when running in full atmospheric mode.