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Thread: Accelerating but falls flat

  1. #1
    Regular Member Maduri's Avatar
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    Vehicle : Vectra C

    Trim : VXR

    Engine : 2.8 V6 Turbo 280BHP

    Year : 2007

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    Default Accelerating but falls flat

    Hello all

    I've been having this issue for some time now and no matter what I've tried the issue just won't resolve, so I'm asking here to see if anyone can come up with other ideas.

    The issue being is that although my Vec C 1.9 CDTI SRI 150 accelerates and can get up to speed at a decent pace it just seems sluggish/flat.

    So far I've installed a hybrid turbo.
    Fully decated the exhaust and have a straight through pipe turbo back.
    Front mounted intercooler with all new silicone hoses and clips.
    New silicone vacuum hoses.
    Remapped by teapot (on going, on the second adjustment and sitting around 200bhp).
    Egr was cleaned out but ended up mapped out.
    Swirls were mapped out though were in working order before.
    Cleaned the small black sensor next to the egr (can't remember the name).
    Fully enclosed induction system with new silicone hoses and clips, so no heat stroke for the engine.
    Also she's had a full service in October last year.

    All that and my old man's 05 vec estate 1.9 Cdti sri 150 with only a remap can kick the backside off it, seems like his just wants to accelerate for fun while mine's accelerates like a 98 year old war vet in comparison.

    Anyone have any idea on what it might be? Open to suggestions.

    Cheers for any replies in advance.

    Andy

    Edited: spelling, damn predictive text... p.s. in the title falls is meant to be feels
    Last edited by Maduri; 18th January 2019 at 11:23.

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

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    Do a datalog for the master to review he might be able to spot a fault, plus get the codes read see if anything appears

    You don’t mention condition or age of all the filters
    Vectra VXR estate 2007 Sapphire Black
    Teapot Tuned 255/300
    Eibachs B8's, fully loaded factory options

    Tech2 & MDI diagnostics + SPS

  3. #3
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    Quote Originally Posted by Dog_Book View Post
    Do a datalog for the master to review he might be able to spot a fault, plus get the codes read see if anything appears

    You don’t mention condition or age of all the filters
    Says it was serviced last October, But agree with your suggestion....

  4. #4
    Forum Moderator soulman's Avatar
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    could be a coil pack problem . ???? not that I know much about engines and stuff .

  5. #5
    Midlands - Vxr Owning Dick Dog_Book's Avatar
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    Quote Originally Posted by JOHNBOY View Post
    Says it was serviced last October, But agree with your suggestion....
    Yup but we don’t know what actual work was done, could have been just oil and oil filter
    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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    Default

    It'd be funny of your old man had shoved a spud up your exhaust pipe 'old skool' style so he could beat you

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    Regular Member justin32's Avatar
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    Vehicle : Vectra c SRI Facelift

    Trim : SRI

    Engine : 1.9 CDTI 150

    Year : 2006

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    could it be your induction system?

    I fitted a fully enclosed one on my 1.9 150 mapped (by teapot), fmic, egr and swirl delete and I felt like mine was holding back until I put the original air box back in and it was a big difference.

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    Quote Originally Posted by soulman View Post
    could be a coil pack problem . ???? not that I know much about engines and stuff .
    It won't be the coil pack.
    As it's a diesel.
    It doesn't have one.

  10. #9
    North West - Assistant RO Woody's Avatar
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    Quote Originally Posted by soulman View Post
    could be a coil pack problem . ???? not that I know much about engines and stuff .


    It's a derv

  11. #10
    Forum Moderator soulman's Avatar
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    oh we;ll , said I didn't know about engines and stuff .lol

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