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  1. #1
    VXRed blooded Steveh24's Avatar
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    12th October 2012
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    Default Poor Performance

    I've just had my turbo reconditioned after it blew up, I've also had to change all the coil packs and plugs, the car is still a bit lumpy at lower revs, but the worst aspect is that it doesn't feel like the turbo is giving that much of a kick and it seems to labor when you put your foot down as it takes a while for the revs to build.

    Is this just a question of getting the engine remapped after the turbo was replaced or is there something else that can be causing the problem
    Last edited by Steveh24; 30th December 2017 at 04:40 PM.

  2. #2
    VXRed blooded Steveh24's Avatar
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    I've been told it could be the vnt actuator, where abouts is this and how can it be tested.

    I've also been told it could be my turbo pipes expanding when the turbo spools up as they are still the original pipes

    Are there no mechanics amongst us.

  3. #3
    VXRed blooded
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    Production engineers maybe, someone is telling you porkies as the Z28 series does not use a vnt turbo. Anything come back from the codes being read?
    Vectra VXR estate 07

  4. #4
    VXRed blooded Steveh24's Avatar
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    Default

    There are no codes on my basic OBD II scanner, but my mechanic will hook his more sophisticated ODB to my car on Tue, but it's a little frustrating that having replaced the turbo, the coil packs and the plugs that my car doesn't feel that powerful when you put your foot down and is a little lumpy at the lower revs, I'm not sure that a turbo pipe or an actuator will result in a fault code if they were the problem

    To be accurate the person who said it could be the VNT Turbo actually said it could be the vnt actuator on the turbo.

  5. #5
    VXRed blooded
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    The vxr turbo which ashamedly i don't know the designation of does not have a vnt.
    Vectra VXR estate 07

  6. #6
    VXR enough Jon1796's Avatar
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    Default

    Or the actuator has not been adjusted to this turbo.


    Sent from my iPhone using Tapatalk

  7. #7
    VXRed blooded
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    Default

    Quote Originally Posted by Jon1796 View Post
    Or the actuator has not been adjusted to this turbo.


    Sent from my iPhone using Tapatalk
    Which if it was would be very poor on the mechanics part who did the work
    Vectra VXR estate 07

  8. #8
    VXRed blooded Steveh24's Avatar
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    Default

    I've now had my mechanic carry out a smoke test and I have 3 seperate leaks and two hoses that have perished

    Does anyone know where I can get a complete set of hoses

  9. #9
    VXRed blooded
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    11th July 2014
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    If you want some nice silicone hoses then try ebay, I know there are boost and ancillary hoses for sale on there.

    If you want OEM hoses then normal business, find the part number then google it, try Autovaux, GPS, Carpartsconnexion and lastly your local dealer.

  10. #10
    VXRed blooded
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    Was going to say Vauxhall’s sell them
    Vectra VXR estate 07

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