HKS SSQV4 RETURN KIT EVO 7-9 CT9A/CT9W

This is the HKS SSQV4 Return Kit specifically for the Mitsubishi Lancer Evolution 7, 8, and 9 models (chassis codes CT9A and CT9W). This kit allows you to recirculate the excess boost pressure from your turbocharger back into the intake system, rather than venting it to the atmosphere. This is often done to prevent issues with the factory mass airflow sensor (MAF) reading unmetered air, which can cause rough idling, stalling, or check engine lights, especially on tuned vehicles. The SSQV4 (Super Sequential Blow-Off Valve) itself is well-known for its reliable operation and distinctive sound.

The SSQV4 features a unique dual-spring valve system. This design helps prevent both premature valve lift at low boost levels and boost leakage at higher boost pressures. The body is constructed from machined aluminum for durability and a solid feel. This return kit includes the necessary components to properly plumb the SSQV4 valve back into your intake tract, ensuring that the air is recirculated effectively. Proper installation is key to getting the most out of this system and avoiding potential drivability issues. It's designed to integrate with the factory intake plumbing where applicable, making the installation process more straightforward for those familiar with Evo engine bays.

When installing this kit, ensure all connections are secure to prevent any boost leaks. This kit is intended for use with the HKS SSQV4 blow-off valve, which is sold separately. It's important to note that this kit is not CARB approved and cannot be shipped to California due to emissions regulations. Always refer to the manufacturer's installation guide for detailed instructions and any specific tool requirements.