Highlights of the APR R1 Diverter Valve Include:
Diaphragm-Based Valve
High-Temperature, Nomex-Reinforced Material for Extreme Durability
Zero-Friction
No Sticky O-Rings to Maintain and Grease
No...
If your turbo isn't acting right and you're not seeing the full boost you expect, consider replacing your N75 valve. It controls the boost signal to the turbo's wastegate and makes sure you're getting the power you're supposed to!