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Thread: Cdti funny noise like dump vavle

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    Regular Member 0114NIGEL0114's Avatar
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    Default Cdti funny noise like dump vavle

    Ive been driving around today and heard today like a pppsssshhh noise when i change gear and nevr heard it before sounds like a little dump vavle why does it do this and can it be made any louder if u get me with out putting a bov on it

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    Regular Member vxpenfold's Avatar
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    Vehicle : Vectra Hatchback

    Trim : Life(well it was)

    Engine : Z19DTH

    Year : 2005

    Mileage : 166000

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    ive put a panel filter in mine and rather annihilated the bottom of my airbox lol and it is really really loud, i love it

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    Regular Member 0114NIGEL0114's Avatar
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    I wounded if i put a corn filter on it it would make it louder u got any pic of the air box mod to see how u have done it vxpenfold

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    Regular Member vxpenfold's Avatar
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    Vehicle : Vectra Hatchback

    Trim : Life(well it was)

    Engine : Z19DTH

    Year : 2005

    Mileage : 166000

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    tbh a cone filter will just draw in hot air and drop power, unfortunately i havent got any pics of it but i just cut out the back and the rear of the bottom and drilled loads of holes down the side, if i can ill get a pic of the old airbox and mark on it where i removed. it isnt the best for power at times as ive its been sitting still it just drags in big lungfulls of hot air but on the move its ok and it sounds brill, the filter i used is an fk automotive one from ebay and didnt even cost me £20

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    Regular Member 0114NIGEL0114's Avatar
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    Cool send me them pic dude!!!

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    Regular Member mcpitman's Avatar
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    Vehicle : Vectra C

    Trim : Club

    Engine : 1.9 CDTi

    Year : 2004

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    I have just done the "rip the pipe off the bottom of the airbox" mod and new air filter and i get this noise as well. Schweeet.

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    Regular Member nutron's Avatar
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    Vehicle : Vauxhall

    Trim : very

    Engine : Z19DTH

    Year : Nosey

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    I have had this before on my last Vectra and it went away by itself. The only reason I could come up with was sticking VNT vanes. If the vanes have gotten clogged and are not moving closing quickly when you change gear, you would keep making pressure without demand and as the turbo stalls the air would back up through the filter.

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    Regular Member vxpenfold's Avatar
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    Vehicle : Vectra Hatchback

    Trim : Life(well it was)

    Engine : Z19DTH

    Year : 2005

    Mileage : 166000

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    well mine is just due to the airbox cos i wouldnt say the vanes are sticking after the pull it did on the dyno the other week (before the intake and exhaust mods)

  9. #9
    Regular Member bangty 1's Avatar
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    Quote Originally Posted by vxpenfold View Post
    ive put a panel filter in mine and rather annihilated the bottom of my airbox lol and it is really really loud, i love it
    Quote Originally Posted by vxpenfold View Post
    tbh a cone filter will just draw in hot air and drop power, unfortunately i havent got any pics of it but i just cut out the back and the rear of the bottom and drilled loads of holes down the side, if i can ill get a pic of the old airbox and mark on it where i removed. it isnt the best for power at times as ive its been sitting still it just drags in big lungfulls of hot air but on the move its ok and it sounds brill, the filter i used is an fk automotive one from ebay and didnt even cost me £20
    would this nnot be like a cone filter and think big 400bhp scoobys and the like have cones and dont get that much heat soak just when there not moveing.........as long as theres a outside fed it be fine id say

  10. #10
    Regular Member 0114NIGEL0114's Avatar
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    Default

    Well can this noise be madE any better or louder at all by doing some sort off mod at all

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