removing the charcoal filter?

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Thread: removing the charcoal filter?

  1. #1
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    removing the charcoal filter?

    Hi guys,

    Has anyone removed the charcoal filter in the air filter box?

    I am thinking about doing so, and am wondering about the expected results of doing so?

    thanks, Todd

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  3. #2
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    What are you expecting to happen when you do?

  4. #3
    In Australia we don't have this other filter
    U don't need it

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  6. #4
    The American sold cars are probably tuned with it in place.

  7. #5
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    Are you talking about the cabin air filter? If so, then you will end up with a smelly car especially in cold wet weather. There is no reason to have a charcoal filter for the engine intake, unless it is a cancer prevention for the left rear piston. Cheers.

  8. #6
    It`s probably part of what makes the car PZEV compliant in the U.S.

  9. #7
    Senior Member long_road's Avatar
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    I snatched mine out on day-two of having the car. It made no noticeable difference, but I feel better knowing it's not there.

  10. #8
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    rlouie - yea idk what will be the results

    scoobyXV-L - I do know that Aussie XVs are different under the hood than US XVs, so I can only make a decision to or not to remove it based on US XVs - thanks anyways

    Todd

  11. #9
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    I think it is call the Hydro Carbon absorption filter. I haven't actually looked at it first hand, but I thought it was part of the air filter box.

  12. #10
    Senior Member PoManzAWD's Avatar
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    Yes, it's part of the PZEV package. All it does is adsorb (as opposed to aBsorb) fuel vapors that may escape from the intake manifold when the engine is not running. When the engine is running, the hydrocarbons are released and sucked back into the engine.

    I know this carbon "filter" was a standard feature on 2010+ PZEV 2.5i Subaru Legacys.

    You're going to get no noticeable performance enhancement by removing it.
    2014 Subaru XV Crosstrek 2.0i premium, 5spd. Desert Khaki, black interior.
    Previous: 2012 Subaru Legacy premium 2.5i CVT

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