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Turbosmart outer wastegate spring for 38/40/45 HP wastegates, specified at 25 PSI, offered in brown and green. It provides a direct way to change boost actuation by swapping the factory outer spring to alter the wastegate opening pressure and boost behavior. Use this when tuning boost control to match a target 25 PSI outer spring rate and to fine-tune turbo control during calibration.
Turbosmart WG 38/40/45 HP 25 PSI Outer Spring Brown/Green
