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Thread: Standard Air Pipe Feed - anyone done this?

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    Full Member Leemarksmith's Avatar
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    Vehicle : Vectra

    Trim : SRi (VXR Styling)

    Engine : Z19DTH (Re-mapped)

    Year : 04

    Mileage : 110k

    Default Standard Air Pipe Feed - anyone done this?

    Following on from the 1.8 improvment thread...



    This was done on another forum to astra mk4 using 2 vec c pipes...

    Anyone done it yet, 1 of 1st things i'll do (when get the sri) for the price of the pipes and half hours bodge...

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    Regular Member ditchp's Avatar
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    Vehicle : Vectra cdti estate

    Trim : Get a

    Engine : Dirty diesel

    Year : 2006

    Default

    quite a few 1.8 owner's have done this single one and we are doing it to matt's on saturday.... fitting 2 would be good to see, might try and get another one for him and have a play
    Midlands Mod Shop - NFFC.

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    Another potential mod would be to drill holes in the front grill where the air in take tube sits.
    On my 1.8 facelift their is a plastic behind the silver v gril is solid, which prevents the air intake from getting a direct mouth full of fresh air. I was thinking of some how putting holes in the gril where the air intake would be. Do you guys think this would make any difference?

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    Regular Member parapaul's Avatar
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    Did it on my old CDTi - made exactly no difference, but it's a free mod

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    Regular Member BlueRob's Avatar
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    I did this....yeah I know I need to get out more
    http://forum.vectra-c.com/showthread.php?t=34444

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    Regular Member rushy's Avatar
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    Vehicle : SRi


    Engine : Z22SE (2.2 Petrol)

    Year : 2004

    Mileage : 137000

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    No guys, this is two intake pipes cut and plastic welded together to make a one off huge intake.

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    I don't see the benefit of this -- widening just the mouth -- when rest of the pipe diameter remains the same and smaller than the cross-section of the mouth. Is the mouth really the choke point? the x-section of the unmodified mouth opening seems same or bigger than the x-section of the rest of the pipe and the exit.

    Also, now the mount points will have to cut off and repositioned. Seems like a lot of work for no return.

    b

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    True. You'd get the same effect just removing the intake completely. Except in the wet, when you're looking at reduced performance due to moisture getting into the engine.

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    Regular Member BlueRob's Avatar
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    Quote Originally Posted by bnam View Post
    I don't see the benefit of this -- widening just the mouth -- when rest of the pipe diameter remains the same and smaller than the cross-section of the mouth. Is the mouth really the choke point? the x-section of the unmodified mouth opening seems same or bigger than the x-section of the rest of the pipe and the exit.

    Also, now the mount points will have to cut off and repositioned. Seems like a lot of work for no return.

    b
    To much hazzzle for nothing

  10. #10
    Regular Member BlueRob's Avatar
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    Quote Originally Posted by Bobfish View Post
    True. You'd get the same effect just removing the intake completely. Except in the wet, when you're looking at reduced performance due to moisture getting into the engine.
    Not quite true IMO. If you remove the hole intake mouth out the intake (airbox) will suck on hot air from the engine bay, and you dont want that...you want an intake that sucks fresh cold air.

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