philthompson Posted May 5, 2015 Share Posted May 5, 2015 New to this so please excuse any errors ! I am wondering if getting my CI 2.3 re mapped will improve the MPG. At the moment I am getting a little over 20 on average. It has the big Luton (over the cab bed). Any advise would be appreciated. Thanks Phil Link to comment Share on other sites More sharing options...
Billggski Posted May 7, 2015 Share Posted May 7, 2015 A lot of discussion on the motorhome matters thread. Just search "re-map" and you should find loads of opinions. All disagreeing of course. Link to comment Share on other sites More sharing options...
Derek Uzzell Posted May 8, 2015 Share Posted May 8, 2015 Search results using “re-map” as the search-term: http://www.outandaboutlive.co.uk/forums/search/query.asp?action=search&searchforumid=all&keywords=re-map&author=&days=&Submit=Search Link to comment Share on other sites More sharing options...
Brock Posted May 16, 2015 Share Posted May 16, 2015 I'd start by looking at your driving style. If you already potter along the motorways at a steady 60mph or less, and along trunk roads at 50mph or less with good forward anticipation to minimise hard breaking and acceleration, then I'd be disappointed at less than 25mpg. What type of terrain do you travel? I get 25mpg going over the Pennines to Yorkshire, 28mpg+ coming back. Are you frequently driving into a head wind? That can sup fuel, especially with a luton and cruise control on. Then what about weight of the van? Is it heavy and can it be lightened e.g. by carrying only 20l of water? Are your tyre pressures correct? What quality of fuel are you using? Some vans drive better than others on the same fuel [allegedly]. You can get the 130 engine remapped to improve fuel consumption but to what extent seems to be viewed through smoking mirrors. A fellow motorhomer has increased his to 160 for a 4250kg motorhome. He says the added power makes for more relaxed cruising and a modest improvement in mpg. However, poor fuel consumption can be caused by so many different things. Link to comment Share on other sites More sharing options...
Billggski Posted May 16, 2015 Share Posted May 16, 2015 An article in honest john in the telegraph today mentions that the latest Fiat 500 has been re-mapped to meet euro 6 emissions, but that this has left it very slow to accelerate on hills. Manufacturers are chasing co2 figures and proper re-maps would seem to be a positive move. Link to comment Share on other sites More sharing options...
Derek Uzzell Posted May 17, 2015 Share Posted May 17, 2015 Honest John’s advice regarding the Fiat 500’s possible shortage of power was as follows: “It’s a problem with the remapping of the 1.2litre engine to meet EU6 emissions standards and it applied from Spring 2014. It damps the throttle and prevents the engine from developing sufficient torque at low revs. The issue is supposed to have now been cured.” What (if anything) that comment should do is provide a caveat that fiddling about with a vehicle’s engine-management system may not always produce a satisfactory result even when the vehicle’s manufacturer is the one doing the fiddling. Link to comment Share on other sites More sharing options...
flyboyprowler Posted May 19, 2015 Share Posted May 19, 2015 Derek Uzzell - 2015-05-17 10:07 AM Honest John’s advice regarding the Fiat 500’s possible shortage of power was as follows: “It’s a problem with the remapping of the 1.2litre engine to meet EU6 emissions standards and it applied from Spring 2014. It damps the throttle and prevents the engine from developing sufficient torque at low revs. The issue is supposed to have now been cured.” What (if anything) that comment should do is provide a caveat that fiddling about with a vehicle’s engine-management system may not always produce a satisfactory result even when the vehicle’s manufacturer is the one doing the fiddling. I enquired into this as our local remap specialist assured me that a remap would work for our Mercedes engine. A subsequent call to Mercedes service found that they do NOT recommend changing the settings at all. I appreciate that it is a different make, but same principles apply. Link to comment Share on other sites More sharing options...
Billggski Posted May 20, 2015 Share Posted May 20, 2015 A remap would change the characteristics of any make of engine, the remappers don't do themselves any favours by overstating the improvements that would happen. Manufacturers of course don't want anyone fiddling with their settings to minimise complaints and warranty work. There are some actual comparisons of before and after on forums, but most are "it feels better". (Or worse) Some solid evidence from actual experience with data is needed. I had a rolling road print out for my Jaguar, but how that translates into performance or mpg? I didn't record it. It feels better. Link to comment Share on other sites More sharing options...
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