Hiss - Vac Leak?

Discussion in 'Technical' started by Pepper, Sep 27, 2011.

  1. Pepper

    Pepper 1991 N/A Slicktop


    I've posted this before but I have the same sound as this youtube vid here when decelerating from 3k~ rpm.

    Is it a Vac leak?
    Anything to do with the AIV? (stock exhaust, aftermarket tips)

    Common? Insight?

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