What's your boost level? Turbosmart wastegate springs are color-coded for the psi and diameter that you need to obtain your boost range. They offer inner, middle, and outer springs for all of their external wastegates. So, set the boost you want to run with springs specifically designed for your wastegates--Turbosmart wastegate springs.
For use with the TurboSmart T28 Style Actuator (TS-0625-1072), this spring will raise boost pressure to 11psi.
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