HKS SSQV4 Blow Off Valve | Nissan 400Z RZ34 (23+) VR30DDTT (71008-KN030)
HKS SSQV4 Blow Off Valve | Nissan 400Z RZ34 (23+) VR30DDTT (71008-KN030)
SKU:71008-KN030
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The HKS SSQV4 Blow Off Valve is a high-performance sequential blow-off valve designed for Nissan 400Z RZ34 models equipped with the VR30DDTT engine. Featuring an innovative two-stage valve structure, it incorporates both primary and secondary valves to deliver precise pressure control across a broad boost range. Its differential pressure control system ensures seamless operation from low to high boost levels, providing consistent and reliable venting of excess pressure. The unique relief-less operation system minimizes pressure relief at high boost, enhancing throttle response and charge stability. Constructed with durable materials and engineered for optimal performance, this blow-off valve offers improved response and reduced compressor surge, making it ideal for high-performance applications.
Designed specifically for 2023 and newer Nissan 400Z RZ34 models with the VR30DDTT engine, the HKS SSQV4 is a direct bolt-on upgrade that replaces the stock valve. It is suitable for street and track use, providing enhanced boost control and responsiveness. Installation involves replacing the factory valve with the included components, ensuring a straightforward upgrade process. This model is compatible with vehicles running increased boost levels and is recommended for enthusiasts seeking improved charge stability and throttle response during aggressive driving or tuning. The kit includes the valve assembly and necessary mounting hardware, making it a reliable choice for performance-oriented Nissan owners.
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Overview
Overview
The HKS SUPER SQV (Sequential Blow-Off Valve) utilizes an innovative two-stage sequential valve structure, incorporating both primary and secondary valves for precise control. Its differential pressure control system allows for seamless pressure management across a wide operating range, from low to high boost. Unlike conventional blow-off valves, the HKS SQV features a unique "relief-less operation system," which minimizes pressure relief at high boost levels. This design enhances charge response during repeated throttle ON/OFF cycles, ensuring optimal performance without compromising boost pressure. Ideal for turbocharged vehicles, it delivers both reliability and high-performance results.
Applications
- FAIRLADY Z (Z)
Features
- Blow-off valves are placed on both banks of the VR30DDTT engine, quickly releasing unnecessary boost pressure from each turbocharger, reducing their load (when the throttle is off).
- Hoses between the turbocharger and intercooler are replaced with dedicated 4-ply silicone hoses for the SQV4, strengthening the hose section.
- All parts except the SQV4 main body are in black to highlight the SQV4.
- The return hose uses a dedicated molded silicone hose, fitting snugly in the engine bay.
