The APEXi Twin Chamber Blow Off Valve incorporates a revolutionary design in boost pressure release systems. Blow off valves allow built up boost pressure to escape into the atmosphere when the engine is no longer under load. This prevents the pressure from backing up into the turbine compressor housing, causing it to rapidly stop, and causing potentially destructive damage to the turbo. The blow off valve is also adjustable to allow desired amounts of boost response between shifts.
The Blitz Direct Drive blow-off valve boasts eye-catching cyber-age styling along with great response and sound. It also ships with two outlet attachments. The tiny stainless steel filter, for use in adverse conditions, gives great protection against dirt and grit getting into the valve. The horn attachment simply allows the most air and sound to escape.
Created to be the most reliable blow off valve system available, the GReddy Type-RS's state-of-the art design allows for greater performance in a compact size. Improved response and increased pressure are achieved through carefully selected spring rates and a large 40mm valve. The real unique feature of the Type-RS blow off valve is the CNC machined 8 discharge ports that draw in the surrounding air to amplify the blow-off sound. The Type-RS is compatible with the standard GReddy Blow-off Valve flanges.
The HKS Super Sequential Blowoff Valve (SSQV) is a dual stage pull type relief valve. Unlike other blow off valves that are push type, the SSQV will not leak under high boost conditions nor under vacuum at idle. Being of a pull type valve structure, the SSQV can not physically leak under any level of boost because boost pressure also keeps the valve closed against its seat. The SSQV is actuated by pressure alterations only, not by the rate of pressure or vacuum in the line, which ensures a quick valve response and complete closure during idle. On typical blow-off valve designs, a large valve is utilized in order to accommodate high boost / high horsepower applications. However, these large valves tend to react slowly and require high activation pressure to open, therefore are not able to activate and prevent compressor surge at light-load conditions. For Universal SSQV applications, weld-on flanges are available in steel and aluminum for custom installation.
Blow-off valves play a vital role in any turbocharged or supercharged system because they not only improve performance but also increase the longevity of the compressor as well. The primary function of any blow-off valve is to prevent compressor surge by relieving the compressed airflow that reverses direction as the throttle is closed.
The Megan racing blow-off valve relieves the pressurized air that is normally forced backwards into the compressor by venting it to the atmosphere. Engine performance is then increased by a quicker turbo spool up, as the turbine speed is not reduced by the backward flow of exhaust gasses. Due to the backward flow of exhaust gasses being reduced, the compressor blades and bearings will not suffer the impact and heat buildup caused by the surge.
Though many vehicles come with factory blow-off valves, they are often undersized and quickly become overwhelmed as airflow levels are increased. The Megan Racing blow-off valve is capable of over 24psi, so it’s perfect for your daily driver or your track-only race machine. Megan Racing blow-off valves are made of high quality chrome-plated aluminum and are very durable. Because of its universal fitment, some modification may be required for your vehicle and professional installation is recommended. The package comes with brackets, hoses and an adapter
One of the best blow off valves hand down!! The highest quality valve we've seen, this unit is a CNC machined all-aluminum blow off valve designed to flat out work and hold all the boost you ask and then some. It's designed to be used with speed-density systems (like the Haltech or VPC), because the valve output cannot be routed back into the intake system. Includes stainless steel mounting flange which will need to be welded onto your current intercooler piping.
The HKS Super Sequential Blowoff Valve (SSQV) is a dual stage pull type relief valve. Unlike other blow off valves that are push type, the SSQV will not leak under high boost conditions nor under vacuum at idle. Being of a pull type valve structure, the SSQV can not physically leak under any level of boost because boost pressure also keeps the valve closed against its seat. The SSQV is actuated by pressure alterations only, not by the rate of pressure or vacuum in the line, which ensures a quick valve response and complete closure during idle. On typical blow-off valve designs, a large valve is utilized in order to accommodate high boost / high horsepower applications. However, these large valves tend to react slowly and require high activation pressure to open, therefore are not able to activate and prevent compressor surge at light-load conditions. For Universal SSQV applications, weld-on flanges are available in steel and aluminum for custom installation.
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