wow upgrade mpg results

Discussion in 'Fiat' started by SC 05 OUT, Jul 20, 2011.

  1. SC 05 OUT

    SC 05 OUT Funster

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    having had my 2.8 jdt chipped in March, Ive just brimed the tank and worked out he mpg, only 24.13 mpg:Sad:

    motorhome is a 3800kilo autotrail scout

    miles covered = 464

    lts used = 87.4 ( 1 lot of 20 lts + 1 lot of 67.4tls) converted to

    gals used = 19.225

    I’ve spoken to wow and discussed my driving style and putting a cleaner (forte) in the tank and I will record correctly the fuel and mileage over the next two weeks were we should cover 1200 miles hopefully we will get a better mpg.

    On the plus side the unit does drive better, but I have been very conscious of driving for economy since the chipping just to see how high a mpg I could obtain
     
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  2. CHRI$

    CHRI$ Funster

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    not good:shout:
    i am a big fan of remaping,but dont believe some figures banded about mpg.
    at least your honest about your mpg:thumb:
    good luck getting it sorted:thumb:
     
  3. buttons

    buttons Funster

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    I have no experience with chips but 24mpg doesn't sound too bad to me.
    The four big elements that effect your fuel are wind your right foot turane speed and using your brakes. If the chip has given you more power then the temptation will be to use that extra power, reducing your MPG.:cry:
    If MPG is a key factor then a smaller motorhome will give you better consumption.
     
  4. hilldweller

    hilldweller Funster Life Member

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    Why do you think it should have a higher mpg ?

    Fuel is turned into energy to propel your van. The van weighs the same. So unless FIAT did a totally crap mapping job how can it improve ?

    FIAT just might have the mixture a bit rich to ensure longevity then some mapper could weaken this to minimum and improve mpg but reduce the engine life from 150K to 50K. We have had a holed piston in a Mercedes on here. NOTE I am not saying WOW have done anything of the sort, I talking theoretical here.

    You say you have more torque, which is expected, so the only way to get more torque is to burn more fuel.

    Our 2l FIAT has been flashed, dramatic improvement in torque but first time out I used that torque and got 20 mpg, backing off a lot it returns 25 mpg just the same as before it was flashed.
     
  5. DuxDeluxe

    DuxDeluxe Funster Life Member

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    To be sure of your MPG you need to keep a record over multiple fill ups over a period of months to eliminate all the other variables such as weather, temperature, driving style variations etc.

    I normally do this on a spreadsheet which is pretty simple to do. I got 24.9 out of my old Lunar on a 3.5 tonne chassis and get about the same (25.3) from my 3.0 multijet on a 4.0 tonne chassis. The first was remapped and the second is only 1400 miles and no remap. I am a great fan of remapping where appropriate but do not use better economy as a buying decision maker. You might get better economy as the engine is not working so hard but driving style and cruising speed will have much, much more effect. As written above - a certain amount of power is needed to propel the van along the road which required a certain amount of energy to be used and a certain amount of fuel to be burnt. All interdependent upon each other.

    The big benefit of a remap to me is the ease of driving.
     
  6. CHRI$

    CHRI$ Funster

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    fiat and all manufactorer map there cars/vans so they will operate at sea level or up the highest road in the world,by tweeking the map to your reqirerment(sp) helps it, less stress on the engine, better torque,better( sometimes) mpg.
    but some of the figures banded about are wrong to say the least.
     
  7. SC 05 OUT

    SC 05 OUT Funster

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    Thats why I contacted wow, they said I would have been gewtting 23/24mpg prior to chipping and 27/28 now. We are going to try a cleaner and light foot

    but no I wont be buying a v dub, couldn't fit my wine collection in one:RollEyes:
     
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  8. SC 05 OUT

    SC 05 OUT Funster

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    thats what I intend to do over the next big trip, ant that the truth, but the tech guys seem to think that the mpg is posible it just seems we need to work a little on achiving it.
     
  9. Road Runner

    Road Runner Read Only Funster

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    My Volvo has now done 17.000 miles and the MPG has suddenly really improved.

    Never believed the engine freeing up till now.

    Out of interest how does chipping effect warranty?
     
  10. SC 05 OUT

    SC 05 OUT Funster

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    not me its the tech people at wow, we looking at how best to achive it, my op was not a complaint about wow, but mearly a report on what I personly have experanced, possibly to help others, Im hoping a cleaner and lifgt foot will help and will report back again in 3 weeks or so
     
  11. SC 05 OUT

    SC 05 OUT Funster

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    not too sure, I dont think they would like it, it dosn't apply to me, mines well out of warranty
     
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  12. iandsm

    iandsm Funster

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    MPG

    I have a130 mutijet Fiat in a 3700kg Rapido. From new it was driven gently for the first 5K, after that just keeping to sedate motorway speeds around 60/65. It now does 28.4 mpg regularly and only drops lower if I increase speed to around 70/75 when in France and even then it still does just over 25.

    Perhaps gentle running in helped, but I am sure driving style helps too.
     
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  13. 656

    656 Read Only Funster

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    I had my 2.3 Fiat remapped by WOW, and the difference in performance was stunning. Far better torque and acceleration. However, I have cruise control fitted and use it all the time. Consequently, my MPG is aroung 23 at 70 MPH. If I dont use cruise control I can get around 29 MPG at 70MPH. As Cruise tries to keep to the selected speed, you can see the accelerator pedal flat to the floor when a hill or incline is encountered. ERGO a lower MPG. You / I would feather the throttle and allow the speed to drop slightly. Cruise Control acually makes driving the 'van much more relaxed and enjoyable.
     
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  14. Douzeper

    Douzeper Funster

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    Save fuel don't use supermarket fuel :)

    My mate gets an extra 45 miles out of a full tank in his Ford Transit using BP instead of Tesco fuel.
     
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  15. acting_strange

    acting_strange

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    I certainly get 24 mpg out of my 2.8JTD I just watch the way I drive...lots of coasting.... very little braking and NO hard acceleration.....
     
  16. imprint

    imprint Read Only Funster

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    One very important point, if you want to have your van remapped, is to check with your insurer first. If you don't you're driving uninsured, with all that means. It's easy enough for the insurers to check. I'm told that it's even possible to tell when the remapping was done, so you can't say it was before your time...

    On the other hand, my own insurers told me that if the remap was for economy there'd be no increase in premium - but I'd have to prove it with a note from the remapping outfit. They've also said this for cruise control.
     
  17. CHRI$

    CHRI$ Funster

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    I 100% agree with the post above:thumb:
    but someone will be along in a min and tell you why it all the same bla bla bla
    ITS not the same supermarket fuel is sh*t dont use it:shout:
     
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  18. Douzeper

    Douzeper Funster

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    The way I have always heard it........ time and time again......

    It all comes from the same place, but BP - Esso etc take it away and put their additives in whereas supermarkets take it straight to the forecourt.

    I wouldn't use supermarket fuel in ANY vehicle!
     
  19. CHRI$

    CHRI$ Funster

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    google (supermarket fuel) and you will see we are not alone.:thumb:
    makes my van lazy:Doh:
     
  20. aba

    aba

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    john if you've been dragging your caravan around for a while recently that can help as it makes the engine work harder thus burning out all the crap that builds up through town driving etc.

    my mate used to drag a 750kg cattle frame for his work as a foot trimmer and the difference it made to his cars after around 3 months of towing was unbelievable.
     
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