Car Blowoff Valves
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Clear- Open Air Intake: They release the air above into the environment, thus producing the characteristic sound of whistling or hissing.
- Closed Type: They recycle the air inside the intake system without producing the characteristic whistle that occurs in open-type vents.
- Open & Closed Type: They give us the option to choose whether we want to release the excess air into the environment or into the intake system.