HKS SSQV4 Blow Off Valve | Nissan 400Z RZ34 (23+) VR30DDTT (71008-KN030)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
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