Exhaust Valve Markings - Boost Closed, Vacuum Closed, and Vacuum Open
In this blog post, you will learn about the meanings of exhaust throttle designations such as Boost Closed, Vacuum Closed, and Vacuum Open, as well as how they affect engine performance and how they can be manipulated to improve efficiency. We will also discuss the consequences and applications of these settings to help readers better understand the significance of these designations for their vehicles.