A Universal Super-Sequential Atmospheric Dump/ Blow off Valve locally manufactured by Xcell Performance
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This Super Sequential Atmospheric or External Dump Valve is locally manufactured in South Africa by Xcell Performance.
These DV's are fantastic qaulity and use O-Rings to seal the piston to allow minimal to no leakage of Boost and Vacuum past the DV piston.
They are fully serviceable and the spring tension can be increased by adding shims behind the spring to increase loudness and to withstand higher boost pressures.