oil cap/ breather
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This is a discussion on oil cap/ breather within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; So today I did a few highway pulls on the way home from work and started smelling oil, so when ...

  1. #1
    Registered User MOTION's Avatar
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    oil cap/ breather

    So today I did a few highway pulls on the way home from work and started smelling oil, so when I got home I opened my hood to find my oil cap was missing. (I know I know....don't rag me on why it was missing,I either forgot to put it on the other day or it vibrated off). Now the thing is the car felt like it had more power and no more 4k rpm "stumble". I have an all stock motor except a drop in filter, downpipe, and a blouch 440xt....and no tune. Was it just me or did my car run A LOT better vented to the atmosphere.
    So the BIG QUESTION is, should I go to an AOS or catch can??? Or am I crazy and it really doesn't make a difference? Also maybe the aos or catch can would prevent my normal blow by?.

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    Subaru Newb MainFrame's Avatar
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    You shouldn't even be driving the car like that.. let alone worrying about AOS or catch can. You're going to blow your engine.

  4. #3
    Registered User MOTION's Avatar
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    Been there, done that. Any recommendation on the breather idea?

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    Subaru Newb MainFrame's Avatar
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    NO.. get a tune.

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    Subaru Newb MainFrame's Avatar
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