HKS SUPER SQV 4 EVO 4-6 CN9A/CP9A 4G63

This HKS SUPER SQV 4 (Sequential Valve) kit is for the CN9A and CP9A Lancer Evolution models equipped with the 4G63 engine. It includes the SUPER SQV 4 unit itself, along with the necessary components for installation. This blow-off valve is designed to release excess boost pressure from the turbo system when you lift off the throttle, preventing compressor surge and helping to maintain the turbocharger's efficiency.

The SUPER SQV 4 features a unique sequential valve structure and a pull-type relief valve, which allows for a stable boost pressure response. Its well-built, die-cast aluminum body is designed for durability and a clean look under the hood. The dual spring structure ensures that the valve operates effectively across a wide range of boost pressures, from low boost to high boost applications. This means you get consistent performance and protection for your turbocharger.

When installing this, you'll want to ensure you have a suitable vacuum source for the valve's operation. Proper installation helps maintain the integrity of your turbo system and can contribute to a more responsive feel when accelerating out of corners or after shifting gears. It's a popular choice for enthusiasts looking to enhance their turbo system's performance and sound.