The screw can be turned out to varying degrees to allow air to bleed out of the system, relieving pressure on the wastegate actuator, thus increasing boost levels. Precise design, anti-corrosion and wear resistance.
Adjustable 1-30 PSI New Racing Turbo Manual MT Boost Controller EMUSA BLACK
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30-PSI Aluminum Adjustable Manual Turbo Charger Wastegate Boost Controller
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30-psi Aluminum Adjustable Black Manual Turbo Charger Wastegate Boost Controller