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Thread: 3.0 V6 CDTi upgrades?

  1. #1
    Regular Member V6Andy's Avatar
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    Default 3.0 V6 CDTi upgrades?

    Hi guys just joined!

    I have not long bought a late 2005 facelift SRI 3.0 V6 CDTi estate

    Im loving the car but not quite impressed with the consumption, its not quite whats in the book!

    Ive read somewhere there is a mod you can do to improve the MPG, however I dont want to effect the performance, I was thinking about a remap but am not liking the horror stories ive read on here.

    I do a lot of miles so would like to gain a little more out of my tank if anybody can help.

    Chers

    Andy.

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    Regular Member m8internet's Avatar
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    I have to agree, remap seems to be about the only modification this engine likes
    Anything else and you can pretty much cut the life expectancy or start saving up for major repair work

  3. #3
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    Quote Originally Posted by V6Andy View Post

    Im loving the car but not quite impressed with the consumption, its not quite whats in the book!
    Many have tried and failed with boxes and remaps,which don't usually encourage economy driving.

    Usually it's only a concerted effort to drive more economically that will make any difference.

    Try asking your local friendly Vauxhall dealer if there are any software updates available.

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    On a Sabbatical daviek's Avatar
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    Get vauxhall to check DPF software

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    Regular Member m8internet's Avatar
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    Quote Originally Posted by diesel dog View Post
    Try asking your local friendly Vauxhall dealer if there are any software updates available
    That's a good point, I've read somewhere that there was one for the facelift

  6. #6
    Regular Member VectraV6CDTi's Avatar
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    If its still under warranty, then risk going for a remap

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    What sort of MPG are you getting then????????????

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    Regular Member ukanalyst's Avatar
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    Quote Originally Posted by V6Andy View Post
    late 2005 facelift SRI 3.0 V6 CDTi estate
    Quote Originally Posted by m8internet View Post
    I have to agree, remap seems to be about the only modification this engine likes
    You will have the Z30DT and from what I've read so far this engine doesn't like Remaps ... I also have a Z30DT and mine's totally standard and never had anything done to it an I wouldn't have either. Having said that it's still had a new Injector, EGR valve, Engine ECU update, fuel suction kit and is going in tomorrow for two new manifolds to cure sticking swirl flaps ... other than that it's a great engine (no seriously when it works it works well )

    Dave

  9. #9
    Regular Member ukanalyst's Avatar
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    Quote Originally Posted by V6Andy View Post
    Im loving the car but not quite impressed with the consumption, its not quite whats in the book!
    Quote Originally Posted by domjfan View Post
    What sort of MPG are you getting then????????????
    Sorry good point ... I missed the topic of your original post! ... mine's no where near what the book says either and it seems to vary quite a bit what people get out of these cars.

    My opinion is that the DPF fitted to the facelift dramatically reduces consumption figures and this is significantly compounded by lots of town driving forcing it to regen at low speeds. I also believe that DPF regen was never taken into account when calculating the official figures for the car.

    For info I get around 32mpg long term average but that includes lots of town driving ... if I run a full tank purely at stop-start town driving speeds I get around 23mpg

    HTH

    Dave

  10. #10
    Full Member Big Sig's Avatar
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    Mines averaging 40mpg at the moment, but mines a pre facelift
    Now I need a turbo to keep up!

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