I think the key thing here is that ECU re-mapping may result in an increase in fuel efficiency, as can changes in driving style, journey planning, etc.... remapping the ecu results in an increase of about 15% in fuel efficiency in diesel engines...
I've had one of my cars custom re-mapped. Its original 130bhp is now a very smooth controllable 175 bhp, 300 ft/lbs of torque and typically does 56 mpg in a mix of driving conditions.... have any readers tried it and what were the results? ...
My car was done in the UK but I'm sure there are firms here who can do this work.... i have been told there is a couple of firms in the country that can do it, no idea on cost doh!
I've had one of my cars custom re-mapped. Its original 130bhp is now a very smooth controllable 175 bhp, 300 ft/lbs of torque and typically does 56 mpg in a mix of driving conditions.
I'm sceptical. Any state of tuning is a compromise. Power, torque, economy, and reliability. Emissions too.
I fail to see how fiddling with the ECU can even hope to make gains on 1,2, & 3 above without scarificing 4.
What about insurance and disclosure?
The car manufacturer has to give a 'default' engine map that will work with various grades of fuel down to really poor grade non-European fuel. Assuming your car will only ever be at a European pump then you can fine-tune your car more effectively, so yes you can re-map and improve on all of the above to varying degrees of success depending on how tuned the car is beforehand.
The car manufacturer has to give a 'default' engine map that will work with various grades of fuel down to really poor grade non-European fuel. Assuming your car will only ever be at a European pump then you can fine-tune your car more effectively, so yes you can re-map and improve on all of the above to varying degrees of success depending on how tuned the car is beforehand.
AFAIK they can't prove a re-map. So disclosure is up to your conscience.
I suspect this is a generic (diesel ?) re-map and that the person telling you that you have a "problem with the air intake valve" is the mapper. Did he call to your house or did you go to his premises and have a custom map done?hi all... just a quick question?. I had my car re-mapped but what i have noticed is the extra power is sometimes there on take off and sometimes its not but when i reach 2000 rpm the turbo kicks in and you can feel the power.can any body tell me why it is not there all the time. I was told there could be a problem with the air intake valve. can any body help. Thanks
Yes, the somewhat fragile clutches and (dual-mass on VAG) fly-wheels fitted to some cars may not last if a re-mapped car is taken to the rev-limits through all the gears, but on the emissions side all is good - still well within the band for the original unmodified engine.That all sounds nice - any downside encountered? emissions etc?
Any idea why the car manufacturer's have to give a 'default' engine map? Surely it would make more sense to tune engines according to the grade of fuel that would be used.
Sorry to go off topic but:
I've found that easing the driving style in a diesel returns a much smaller saving than in a petrol. My proof: 16 year old civic driven normally gives 45mpg. Driven gently gives up to 67mpg.
Spanking new diesel kia ceed driven normally gives 50mpg, driven gently gives 55mpg.
Anyone got any idea why this might be?
Anyway, about remapping for mpg. I believe it gives a small return alright but you'd HAVE to tell the insurance company and you just know they are going to salivate heavily when you say the word "remap", therefore wiping out any fuel savings. I would also guess that they won't listen to you when you say you drive gently for more mpg and therefore are guaranteed to never end up in a ditch or up to the windscreen wipers in another car! I dunno, maybe someone here works in car insurance and will tell me otherwise. I'm quite happy to be corrected!
ollie
Hmmm.......so i'm not crazy then! You should let him have the auris for a while to see how it does.......!!ollie, it's mad that you said that, my auld lads 1.4 petrol corolla 06, everytime the I take it for a drive and check his MPG on the computer it's up to 62 MPG!, he's a serious sunday driver practicing everyday! My auris 1.4 d4d does an average of 50.
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