HKS Super SQV (Sequential Blow Off Valve) uses a unique sequential valve structure and a differential pressure control system, which allows for a broad operating range from low boost to high boost. Its Pull-Type relief design ensures stable operation regardless of the amount of boost pressure. The Super SQV will support new generations of turbocharged vehicles.
Bought myself an HKS super sqv4 bov for my Genesis coupe, I would highly recommend boost factory to anyone looking to get your hands on genuine HKS product at a reasonable price was comparable pricing to anywhere else I looked online and some of the cheaper ones looked to be suspicious. So that's why I choose boost factory as they're listed on HKS website as a distributor and purchase went smooth and I am loving the BOV