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Old 11-06-2019, 08:40 AM   #21 (permalink)
rob.e
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Join Date: Aug 2019
Location: Oxford UK
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Civic - '15 Honda Civic Tourer SR
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Quote:
Originally Posted by UFO View Post

I also would not expect to get better mileage "leaning" the mixture at light loads because diesels always run lean; reducing the map at light load would simply reduce power forcing the driver to apply more fuel via the accelerator.

I've had the revised map on the car for several weeks now and it's definitely using less fuel to travel at the same speeds as before - see my pic above, with a warm engine, constant speed, i have achieved up to 99mpg. No way i could get it that high previously.

My overall average is not much difference, as i'm finding it hard to avoid using the additional performance i get with the new map, but when i'm really doing my best (driving style) for mpg then it is easier to obtain high numbers, and the max i can achieve is greater than before based on my non-scientific experimentation

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