It has only cover function

They are providing class-leading fuel control and response with a small footprint

E88 M and nonM

• Improved boost response• Flatter boost curve in the top end

WG50 GenV Progate 50 7psi Blue JR22 It has only cover functionThe Gen V WG50 Pro Gate50 external wastegate is a cost effective, high performing 50mm external wastegate. The Gen V provides extensive user configurability, world leading extended thermal performance, fatigue resistance and best in class flow performance for optimum control and longevity. A direct fit upgrade to all 4th generation Turbosmart wastegates and feature our unique collar locking system, variable actuator cap and base, strap type V band