Adjustment Shims for H and XS Valves

Fine-tune the performance of your TurboXS blow off valve with TurboXS Adjustment Shims. These precision shims allow you to adjust the spring preload inside the BOV, helping optimize response for different boost levels and driving conditions.

By increasing spring tension, the shims help prevent premature valve opening under vacuum. This allows your blow off valve to operate exactly as intended while maintaining reliable boost control.

Features:

• Designed for TurboXS H and XS blow off valves

• Adjusts spring preload for higher vacuum applications

• Helps prevent premature valve opening

• Simple installation inside the BOV spring assembly