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Thread: Hollow dpf, no mufflers. Very silent?

  1. #1
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    Vehicle : Saab

    Trim : 9-3

    Engine : Z19dth

    Year : 2008

    Default Hollow dpf, no mufflers. Very silent?

    Hi! My z19dth engine in my Saab still sounds like there is mufflers on it. I've got a hollow dpf and no mufflers.
    Sounds about the same as with a working dpf and muffler.
    Muffler is gone and replaced with 2.5" pipe.

    Why? I thought it would sound s little bit more with no mufflers and hollow dpf.

    How can I make I sound louder.
    If I watch YouTube videos with z19dth dpf off they sound much much more than my does.
    My z19dth Saab sounds nothing.

  2. #2
    Midlands - Vxr Owning Dick Dog_Book's Avatar
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    Vehicle : Vectra Estate

    Trim : VXR

    Engine : Z28NEH

    Year : 07

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    When you say hollow dpf do mean a completely gutted one or is it core drilled?
    Vectra VXR estate 2007 Sapphire Black
    Teapot Tuned 255/300
    Eibachs B8's, fully loaded factory options

    Tech2 & MDI diagnostics + SPS

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    Quote Originally Posted by Dog_Book View Post
    When you say hollow dpf do mean a completely gutted one or is it core drilled?
    It's almost empty. 95% empty

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    Midlands - Vxr Owning Dick Dog_Book's Avatar
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    Sleeve it then, that will increase the sound. 2 holes in the tube will be enough to stop it resonating too.

    IMG_2728.jpg
    Vectra VXR estate 2007 Sapphire Black
    Teapot Tuned 255/300
    Eibachs B8's, fully loaded factory options

    Tech2 & MDI diagnostics + SPS

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    Quote Originally Posted by Dog_Book View Post
    Sleeve it then, that will increase the sound. 2 holes in the tube will be enough to stop it resonating too.

    IMG_2728.jpg
    Thanks
    I will try that ��

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    So it's just a exhaust pipe right through the dpf?
    2" pipe?

  7. #7
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    Or is it a 2.25 inch pipe?

    I think I will put 2 inch pipe right through and weld it inside
    So there is no sign of modifications on dpf.

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