What kind of mpg do you guys get with a 4x4 lb7. only mod i have at all is ppe programmer on level 2 (90 hp). Stock i only got 13-14mpg... now i get 15-16 if i drive 60-65mph. Is this average? I also have 20in. wheels with 33" mud grapplers
LB7: mpg
- Thread starter Barlow
- Start date
I know mine is not a regular LB7, but with my current tune I am averaging 20 or a tad better with mixed city/highway driving with some hard throttle thrown in. Worst tank so far was 13.2 and that was all around town driving like an animal, and then thrown in some trailer hauling. If I drive it conservatively towing it will get 16-16.5. I bumped the timing up with EFILIVE to about 5-7 degrees in the cruising RPM areas and it helped me about 2 MPG over the stock programming.
city I get somewhere between 17 and 18 , highway I get 20 + but now that its cold and winter fuel it has dropped a good 2-3 mpg
I get somewhere around 15 driving in town, and 18 or so on the highway. LB7s in general seem to get the best mileage at or below 2000rpm.
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Agreed it really varies alot I have had anywhere from 14-26 highway, but mostly 17-19highway.
How do you know how to calculate from the dic or the pump? I corrected the dic in my efilive tune but the correction table runs out of range in the high pulse widths for a 500 HP tune.
I would feel that the dic would be way more accurate as it references all kinds of tables adjusting for temperature pressure and pulse width, but everyone always says the dic is really inaccurate and you can only tell by filling up at the pump. I would think the gas station pump woulld be more inaccurate.
From what I rember a long time ago when I used to keep track is that the dic would always be about 2.3mpg better than what I calculated from the gas station pump and miles traveled.
I would feel that the dic would be way more accurate as it references all kinds of tables adjusting for temperature pressure and pulse width, but everyone always says the dic is really inaccurate and you can only tell by filling up at the pump. I would think the gas station pump woulld be more inaccurate.
From what I rember a long time ago when I used to keep track is that the dic would always be about 2.3mpg better than what I calculated from the gas station pump and miles traveled.
Filled up today and hand cal was 18.6 last tank was 19.2 hand calc. Those were a mix of freeway and town I usually hit around 21 on the freway trips and when it is mostly around town avrg depending on how I drive is 15-17 all hand calc. My dic verys anywere from 2-6 mpg off seems to be diff every time I fuel for some reason.
I average around 15 in the city, have seen just over 20 on the highway. Hand calculated, speedo is dead on, DIC use to tell me 2-3 more, now it reads lower than actual 
with new tunes.
edit: oops, just saw you were asking about 4WDs. Oh well, something for comparison I guess.
with new tunes.edit: oops, just saw you were asking about 4WDs. Oh well, something for comparison I guess.
With my lifted rig, in town i average 15-16. Highway was 20-21 at 70. This was before the twins.
My last tank was 20.2 mpg... that's usually where it's at. Mixed driving, dd tune, on 275/55/20s.
had my truck for a couple of weeks now, did first calculation yesterday, 16.4mpg around town, not too bad I guess, will keep an eye on it and see what the trend is.