New to Bombers, fuel milage question
#1
New to Bombers, fuel milage question
I have a bone stock 2005 cummins 3500 dually 4x4. I here other cummins owners brag about 20mpg. I have been hand calculating for a month now and the best i got not pulling anything was 17mpg. Has anyone used EFI live and can you post the numbers? I don't want to spend more on the parts then I can save at the pump either.
#3
#4
#5
Slightly taller tires and a tuner like Smarty to tweak the timing might help a bit. Your truck stock will make 20 mpg. at 55-60 mph, steady driving, in good conditions. Might do a little better with timing advance, but, average will not be that. Genrally, the average for an 05 is going to be in the 15-16 mpg. To beat that will take some parts and $$, these trucks are heavy, a brick in the air, and emissions tuned stock.
#6
Does your rig have a manual trans or auto? 20 mpg is doable on an open highway, but ya gotta drive it like an old lady. It helps to have a free flowing intake and air filter, as well as a free flowing exhaust system. My truck will get 21 mpg according to my GPS, however the overhead "lie-o-meter" will indicate a steady 23.6 mpg (I wish). On long trips I will not go over 65 mph. In the city I will average 14-15ish (GPS). The Lie-o-meter will indicate 17-18ish (way optimistic IMO). I believe my GPS.
#7
Does your rig have a manual trans or auto? 20 mpg is doable on an open highway, but ya gotta drive it like an old lady. It helps to have a free flowing intake and air filter, as well as a free flowing exhaust system. My truck will get 21 mpg according to my GPS, however the overhead "lie-o-meter" will indicate a steady 23.6 mpg (I wish). On long trips I will not go over 65 mph. In the city I will average 14-15ish (GPS). The Lie-o-meter will indicate 17-18ish (way optimistic IMO). I believe my GPS.
#8
It doesnt actually calculate fuel mileage, but does however indicate accurate miles driven. With this I found that my speedometer is roughly 2/tenths of a mile off, according to GPS. Hand calc is still needed to determine mpg, but its more accurate than going by the lie-o-meter. Its not exact, but pretty darn close.
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