How do I select the correct valve for my universal application?Updated 3 months ago

Selecting the correct universal valve for your vehicle requires a baseline knowledge of your needs and intended air routing system. First, you need to identify the size of the valve that would be sufficient for the volume of air you will be discharged through the valve. Next, you need to determine if you plan on plumbing the air back into the intake tract, releasing it to the atmosphere, or a combination of the two. Some vehicles have limitations in this regard because of the air metering device being used to calculate the fuel supply to the engine. The final step in choosing the correct universal valve would be to identify which spring is supplied with the unit in its base form and to confirm that this spring is the best option for the amount of vacuum your vehicle generates.