Hissing/Whistling Sound?
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2004-2007 Cadillac CTS-V General Discussion Discussion, Hissing/Whistling Sound? in Cadillac CTS-V Series Forum - 2004 - 2007; I am getting a hissing/whistling sound when I accelerate. Ive had the car for about 2 months now and never ...
  1. #1
    Broadway Joe is offline Cadillac Owners Member
    Automobile(s): 2007 CTS-V
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    Hissing/Whistling Sound?

    I am getting a hissing/whistling sound when I accelerate.

    Ive had the car for about 2 months now and never noticed the sound before but I just installed K&N Intake and had the air, radio etc turned off.

    Appears all connections are secure. No noise when in neutral even when I step on the accelerator, only when in gear. No check lights on after install. Thoughts?

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  3. #2
    darkman's Avatar
    darkman is offline Cadillac Owners Master
    Automobile(s): 2005 CTS-V
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    Re: Hissing/Whistling Sound?


  4. #3
    WesH8398's Avatar
    WesH8398 is offline Cadillac Owners Enthusiast
    Automobile(s): 2006 CTS-V
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    Rest assured, my k&n FIPK II does the same thing. I've re-tightened all the connections multiple times and it's never eliminated the whistle effect. Must be the filter itself.

  5. #4
    wcryan is offline Cadillac Owners Connoisseur
    Automobile(s): 07 CTS-V Maggied
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    Re: Hissing/Whistling Sound?

    I kinda like it

  6. #5
    Broadway Joe is offline Cadillac Owners Member
    Automobile(s): 2007 CTS-V
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    Re: Hissing/Whistling Sound?

    I guess no choice but to live with it. Thank you for the responses!

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