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Thread: Boost pipe expanding..!

  1. #1
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    Default Boost pipe expanding..!

    car is a signum 2.0dti,

    The left hand boost pipe expands on boost, I only held the car at 2500-2800 revs and it had swelled up almost half its size, its also quite squidgy and seems to have no support in its walls, could this be the cause of my low down power problem, basically it has no poke at all, nothing.

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    It's probably gently leaking in several places too. Change it, change it, change it! Also, check the other boost pipes for splits carefully, especially behind them. A good workout for your fingers, too! Obviously, engine off and cold when you do this. Just thinking about this, it would be a good idea to clean out the intercooler as it could be causing some excess backpressure, but replace that pipe first for sure. It may be cheaper and more dependable to get a length of silicone hose than the VX part.
    Last edited by limpmodeblues; 12th August 2011 at 03:00.

  3. #3
    VIP-Member Caveman_nige's Avatar
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    Vehicle : Vectra, Signum & Insignia

    Trim : Elite

    Engine : Z18XE,Z19DTH,Z20NET,

    Year : 2006

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    defo look to changing the pipe but also the causes.. as mentioned disconnect your intercooler and flush it out asap
    The wifes vec show car is currently being stripped for parts before i scrap it, keep an eye on the sales section.. https://www.vectra-c.com/forum/garage_vehicle.php?do=view_vehicle&id=709




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