Turbosmart Gen-V WG38/40 3psi Black Inner SpringTurbosmart's WG38 40 3psi Black Inner Spring is a must have for external wastegate setups. This spring provides the ideal boost pressure for any turbocharger, ensuring consistent and reliable performance even under extreme conditions. Turbosmart's design ensures that this spring will last for years, providing maximum performance with minimal maintenance. With Turbosmart's WG38 40 3psi Black Inner Spring, you can trust that your engine will perform as