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  1. 10-19-2016 05:57 AM #1
    sam75
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    What is this noise?

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    Hi guys

    Just got a 2006 S4 Avant. It has a Milltek cat back (non resonated I think). Under full throttle it makes a "chirping" noise like a cricket, reminds me of an old VW Beetle! I have listened to various Miltek's on YouTube and none of them make this sound.

    If anyone has a clue what this could be, I would appreciate it !

    https://youtu.be/93kJrIYZ9gc


    thanks
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  2. 10-19-2016 07:37 AM #2
    bwizard
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    A leak down pipe to turbo

    Sent from my S4's talk to text @ a buck thirty
    weekly driver 02 S4 2.7t auto stock
    Wife's 04 A4 1.8t auto stock
    Daughter's 97 A4 AEB Bored to 2.0t K04 sport cams
    My role family tech.
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  3. 10-19-2016 07:47 AM #3
    sam75
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    Thanks for the reply, this is the 4.2 v8 NA engine though.
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  4. 10-19-2016 08:03 AM #4
    bwizard
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    OK where the after market exhaust bolts to manifold

    Sent from my S4's talk to text @ a buck thirty
    weekly driver 02 S4 2.7t auto stock
    Wife's 04 A4 1.8t auto stock
    Daughter's 97 A4 AEB Bored to 2.0t K04 sport cams
    My role family tech.
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  5. 10-19-2016 08:03 AM #5
    sam75
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    Aha gotcha, thanks
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