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the problem with all other vehicles is it is dependant on your right foot,if you drive in a sensible style you should achieve 10-15% better fuel economy.
As I point out to my customers in the motorhome market average mileage for a motorhome is between 5-7000 miles,you will be a long while returning your investment if remapped purely for fuel economy.
In theory, I agree with you Alex its just that on this forum, and elsewhere, the majority say how much better driving up their favourite hill the MH is and one or two have said the economy was worse, but I haven't heard anyone say how much better economy it is. Surely we aren't a bunch of boy racers
We do around 15K miles per year so averaging your 10-15% and using a 12.5% improvement in economy, this would return around £400 in a year - now that's worth considering. Come on Alex give me some proof here
Just worked out a 10% saving on our fuel would be close to £200 PA.
So if remapping saves 10% on fuel, for bigger vans it could be worth while for just for the fuel economy
Alex does the 3.0 Fiat remap ok? I have heard comments about if producing black smoke when climbing hills after they are remapped. But I have also heard it is the same as the Iveco engine and they are 180Bhp before a remap with a bit more torque
If you had a speed limiter i would guarantee better fuel economy,unfortunately because no speed limiter is fitted to motorhomes i would be leaving myself wide open,but if you think about the theory behind remapping more torque equals higher gear climbing hills etc,top gear reached much quicker and less changing down the box so therefore less rpm which means less fuel injected into the engine.
Also we have a good bespoke mod for the 3.0 160,main reason black smoke is produced is because of excess fuel,this is a problem with plug in boxes and also if you get this with a proper remap the modification is not correct,too much fuel at part load and full load.
Please bear with me anyboidy expecting replies after today as i am away until 30th june.
Regards
Alex
I have one on my van. There's some power settings for low/high revs and I've settled on medium/medium as the best compromise. 5th gear much better and about 10% better on fuel though you tend to just drive a bit faster with the extra power so you don't really get any more mpg.
I spoke with the guy who makes them and they work - just like all the other remaps - by squirting a bit more fuel into the motor at the given firing point. Whether they cost 500 quid or 150 quid it's all done the same way unless you reprogram the ECU which is fine until you have your van serviced and they overwrite it with an update!
The only thing you've got to watch is the clutch. It's a bit on the edge on the 2.8jtd anyway and if you are abusive in coming on and off the power in 4th or 5th with 35BHP more you can provoke it to slip. The 2.8jtd Power 156BHP engine that Fiat released had a better clutch and a bigger intercooler to cope with the increase in power. If you chip your 2.8 you won't so be a bit careful with it.
Cheers, Mark
Well I guess with a box at least you know what difference it makes, with a remap you don't know what has been done. I had a remap done after posing the same question some time ago, at first it seemed ok but now I am not so sure. I still have to change gear as often as I used to ( or so it seems over time) and I do get a little smoke on cold starting. I would take it back but the firm has gone like so many more. Now I really need it checked but will this cost money? can I fit a box? etc.
I have one on my van. There's some power settings for low/high revs and I've settled on medium/medium as the best compromise. 5th gear much better and about 10% better on fuel though you tend to just drive a bit faster with the extra power so you don't really get any more mpg.
I spoke with the guy who makes them and they work - just like all the other remaps - by squirting a bit more fuel into the motor at the given firing point. Whether they cost 500 quid or 150 quid it's all done the same way unless you reprogram the ECU which is fine until you have your van serviced and they overwrite it with an update!
The only thing you've got to watch is the clutch. It's a bit on the edge on the 2.8jtd anyway and if you are abusive in coming on and off the power in 4th or 5th with 35BHP more you can provoke it to slip. The 2.8jtd Power 156BHP engine that Fiat released had a better clutch and a bigger intercooler to cope with the increase in power. If you chip your 2.8 you won't so be a bit careful with it.
Cheers, Mark
Well I guess with a box at least you know what difference it makes, with a remap you don't know what has been done. I had a remap done after posing the same question some time ago, at first it seemed ok but now I am not so sure. I still have to change gear as often as I used to ( or so it seems over time) and I do get a little smoke on cold starting. I would take it back but the firm has gone like so many more. Now I really need it checked but will this cost money? can I fit a box? etc.
Graham
After searching out a lot of advice from members who had had remapping done I finally got Harold of Cartech to come and sort me out. First he did a complete diagnostic check to see what had been done and discovered that the previous remapper had not installed the correct map for the Peugot 2.8hdi. He then removed the existing map to disk and remapped with the correct upgraded map. We then went for a test drive part urban and part motorway; it was like chalk and cheese! What a difference acceleration was much better and fifth up hills was a dream. All in all the process took about 2 hours but he insisted that if I was not completely satisfied he would return it to the original and I would owe nothing. I have just done my first trip of around 250 miles and I can say it was comparable to driving a car not a commercial vehicle, mpg was improved as well from 22 up to 26 although this was not my prime intention for the remap it was for power when towing. I am in the process of coming down to one car in the household and have ordered a Toyota Yaris which is a little heavier than the Sceicento (which I will sell as a tow car in September) so the extra torque will be very useful.
Harold came with his wife Susan who are both motorhomers and members of this site and what a nice couple they are, before long we felt we had known them for years!. So if you read this Harold many many thanks.
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