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The GFB EX50 9 psi wastegate spring (middle) is a replacement spring calibrated to about 9 psi for EX50 wastegate actuators. It sets the actuator preload to establish the approximate boost threshold, allowing staged spring swaps to adjust boost onset. Sold as the middle-pressure option, it provides a simple mechanical way to change boost control characteristics without altering other hardware.
GFB EX50 9psi Wastegate Spring (Middle)
