Subaru Blow-Off Valves

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Apexi

Apexi Blow Off Valve (Twin Chamber), Subaru

The Twin Chamber Blow Off Valve is an adjustable, high-response unit for use on a wide range of applications. Rather than relying on the vacuum chamber alone, the Twin Chamber Blow Off Valve harnesses boost pressure in a second chamber to assist in openin

Greddy

GReddy Blow Off Valves/Related Parts, Subaru

Turbo lag is the enemy of any turbocharged vehicle. GReddy Blow Off Valves are easily adjustable to prevent both premature boost leakage and compressor surge. The spring stiffness adjustment screw and 3 different sizes give the GReddy user the option to match vehicles with mild upgrades to heavily tuned engines. Also available in an easy to install kit form for many turbocharged vehicles.

HKS

HKS SSQV Blowoff Valve (Universal), Subaru	HKS Super SQV (Super Sequential Blow Off Valve) uses a unique sequential valve structure and a differential pressure control system, which allows for a broad operation range from low boost to high boost.



HKS SSQV Blowoff Valve Kits, Subaru	HKS SSQV Blowoff Valve kits are vehicle specific kits that allow for integration of SSQV units into stock turbo and intercooler assemblies. These HKS kits include all needed mounting brackets, mounting flanges and piping for each specific application.



HKS Racing Blowoff Valve Type II, Subaru	The HKS Racing Blowoff Valve Type II uses a large single stage aluminum pull type valve to handle the extreme amounts pressure and airflow volume that is associated with the high boost / horsepower applications of 3.0 bar (43.44psi) and 800+ horsepower. Universal Application, modification will be needed for custom fitment



HKS Racing Blowoff Valve (Universal), Subaru	HKS Racing Bypass Valves function similar to Standard Bypass Valves but incorporate an additional pressurized port to aid under severe boost conditions. They can also be used as safety ""pop-off"" valves if the second port is connected to a pressure source. Universal application; modification will be need for custom fitment.



HKS Standard Bypass Valves, Subaru	HKS Standard Bypass Valves HKS Standard and Racing Bypass valves are push type valves that utilize calibrated spring pressure and vacuum line pressure to remain closed against the pressurized air in the charge pipe. As the throttle is closed, creating vacuum in the line, combined with the force of the pressurized air in the charge pipe, the bypass valve pushes opens and allows the pressurized air to escape. The HKS Standard Bypass Valves are adequate for the airflow associated with engines producing upwards of 300hp. HKS Racing Bypass Valves function similar to the Standard Bypass Valves, but incorporate an additional pressurized port to aid under severe boost conditions. The Racing Bypass Valve can also be used as a safety "pop-off" valve if the second port is connected to a pressure source that does not see vacuum. For added flexibility and function, HKS Racing Bypass Valves are offered in various adjustable boost pressure ranges that are determine by a specific spring pressure.



HKS Racing Bypass Valves, Subaru	HKS Racing Bypass Valves HKS Standard and Racing Bypass valves are push type valves that utilize calibrated spring pressure and vacuum line pressure to remain closed against the pressurized air in the charge pipe. As the throttle is closed, creating vacuum in the line, combined with the force of the pressurized air in the charge pipe, the bypass valve pushes opens and allows the pressurized air to escape. The HKS Standard Bypass Valves are adequate for the airflow associated with engines producing upwards of 300hp. HKS Racing Bypass Valves function similar to the Standard Bypass Valves, but incorporate an additional pressurized port to aid under severe boost conditions. The Racing Bypass Valve can also be used as a safety "pop-off" valve if the second port is connected to a pressure source that does not see vacuum. For added flexibility and function, HKS Racing Bypass Valves are offered in various adjustable boost pressure ranges that are determine by a specific spring pressure.

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