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Thread: Considering a 2004 3.0 V6 cdti Vectra

  1. #1
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    Default Considering a 2004 3.0 V6 cdti Vectra

    I'm in the position where I now need to purchase another car. My current vehicle is a mk 5 VW Golf 1.9 105 TDi. I'm really interested in the Vectra's power/economy balance. I will be travelling 60 miles on a round trip consisting mainly of flat straight A roads in Lincolnshire. I have two questions for all you experts out there:

    What type of economy should I expect on this type of run?

    I'm also considering fitting the Diesel Tuning UK Spider Box. It mentions an economy mode when you are taking it easy. Anyone any experience of this tuning box?

    Thanks in advance

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    Well, I have a 3.0 V6 SRi CDTi, and on a run i get about 42 MPG, which I think
    for a V6 is very good.

    I don't have the tuning box, but have heard good things.

    Gazza

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    Regular Member m8internet's Avatar
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    You should get between 35 and 55mpg, depending on conditions
    I carried out a short 15 mile test on the M8 and M80, keeping to 50mph with an ambient air temperature of -2'C, and returned 85mpg
    I'd expect that to drop to about 70mpg during normal the summer

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    Thanks guys. One of the main reasons for considering the 3.0 is the standard fitting of ESP. I've got it on the Golf and its saved me in the wet a few times!

    I think I may plump for one in black IMHO I reckon they look best in dark shades, and especially mean in black!

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    On a Sabbatical daviek's Avatar
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    Highly recommend V6 ,I run a DTUK CRD2 box and average 37-39mpg but with added zest

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    Regular Member m8internet's Avatar
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    The ESP is awful, in my experience
    I have had a few cars with traction control...

    The Vectra B SR140 (2.0 petrol) was probably the best
    You put the foot down and it would retard the fuel
    Take the car on a series of sharp corners and it would control the loss of traction at the rear of the car, switch the TC off, repeat, and you could get all the tyres to scream

    The Ford Mondeo 2.0 TDCI didn't have any form of traction control, just basic ABS, ironically virtually the same bhp as above!

    Carrying out the same test on the SRi 3.0 V6 CDTI I can get the tyres to scream, which shouldn't happen with traction control
    Putting on opposite lock and the ESP eventually kicks in, but that's about the only time it takes over
    It is possible that it has been tuned down, as the original version actually used more fuel when traction control was on!
    I will shortly be coming up to brake pad and disc renewal so it will be interesting to see how the rear brake wear is (after all most of the traction control braking should be here)

    All these tests were carried out a VOSA location
    The first test is a fast clockwise circle, at maximum speed
    This is then repeated in the opposite direction
    The second test is as above, with a rapid snapshot to opposite direction
    The third test is a rapid deceleration from 40mph, whilst driving in a clockwise circle, over an adverse camber
    Last edited by m8internet; 2nd April 2007 at 22:26.

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    I guess ESP systems are different for each car. I know that enthusiastic, and very skilled, drivers don't like ESP as it interferes with the brakes/power.

    I had an incident where a cyclist came out straight in front of me in the rain, and dark, earlier this year. I was travelling at 50 mph, in a 60 limit I might add(!), I had to swerve vioently to the right to miss him. I'm sure that without ESP I would have lost control. I can live with the intrusion if it helps me out in an emergency!

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    Regular Member m8internet's Avatar
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    As yet during normal driving I've not had the ESP appear once
    My personal opinion is that if it does come on, then my driving is awful!

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    I have just gone from a re-mapped 1.9 150 Vectra to a 3.0 CDTi Signum.

    If you take it easy, the 3.0 is capable on runs of doing actual 47-50mpg, but expect 38-40mpg with mixed driving. Thrash it and it will drop to around 30mpg.

    The ESP and TC is very good indeed, much better than older Vauxhalls fitted with similar systems. Where my old re-mapped Vectra used to scrabble for grip in anything but dry weather, I have not had the TC light flash once in wet weather with the Signum.

    I have tried a few tuning box's on mine now and to be honest I am not impressed with any of them, after a session on a rolling road NON of them produced what is claimed. I persoanlly feel the 1.9 CDTi responds better to tuning box's than the 3.0.

    In my opinion, a re-map is the best way to extract mroe power frm the 3.0 CDTi in a safe way.

    Don't expect economy anywhere near your Golf though in any driving condition.
    Last edited by Maverick; 3rd April 2007 at 08:11.

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    Ex Vec-C Admin & Founder Bainie's Avatar
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    I reckon without esp I would have written the Astra VXR off, due to silly driving, I came off the dual carriageway onto a slip road doing 70ish , the rear end stepped out and esp straightened the whole thing up, all happened in a split second but I reckon had the electronics not kicked in it would have been a very bent car !!!

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