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What is this?
1 Attachment(s)
What is this? I unhooked it when I installed my air intake. Do I need to put a breather filter on it?
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its a one way breather for the cat (if its working properly). helps warm it up faster for emission reasons. you can cap it off or put on a breather. be sure to cap the air filter adaptor too.
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not for the cat it's for your egr
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its the carbon box
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