i drove 200 miles straight at on 55mph... and only got 15 mpg!!!
ppe set on level 2
all else stock
ppe set on level 2
all else stock
what is killing my mpg??
- Thread starter Barlow
- Start date
winter fuel, headwind, low tire pressure, dragging brakes, fuel system issue -- point is, it could be anything.
Last edited:
Like Tom said it could be alot. I'm pretty big on mileage so I make sure filters are all clean, tire pressure is good, that i've got as little crap
in the bed/cab as possible and just general stuff like making sure everything is greased well. Biggest thing is to switch to efilive too. I get 23 mpg hand calculated on a 4" lift with 35s.
in the bed/cab as possible and just general stuff like making sure everything is greased well. Biggest thing is to switch to efilive too. I get 23 mpg hand calculated on a 4" lift with 35s.
jordan what tire pressure do you run on those 35's? i keep getting 17mpg going approx. 75mph with 4" lift & 35's. i think those m/t atz's rated up to 65psi i run 52
Jonathan, I run 33's and get 19 at 75 depends on terrain. with the 4088 i have been getting up to 21 @65-70. I know when I go over 2k rpm no matter what tune my mileage drops immediately.
I run around 48 psi. I got around 21 with my 4088. But I didn't try to tune it for economy at all.
23 mpg? Is that from the DIC calc or your own math? I average 17 or so.....a non stock turbo makes you gain 5 mpg's?
Do all your regular maintenance stuff IE change oils, filters, etc and then if its still the same could be the fuel you use. 15 mpg seems kinda low.
Do all your regular maintenance stuff IE change oils, filters, etc and then if its still the same could be the fuel you use. 15 mpg seems kinda low.
Hand calculated as my post states. I have a stock turbo. Read through the thread.
i have 245's on my truck and EFILive tuning by JoshH and it takes effort at 65mph to get to 22-23 and that is cruising only, I can't avg that for a full tank. I have found that I get less mpg if I stay below 60mph, seems to be much happier at 65 but not over 68mph.
Here is where you should be based on my experience with my truck (43k miles, LMM 4x4, 245x75r16, CCSB, 400rwhp EFI tuning by JoshH)
65mph - 22mpg cruising
70 mph - 20mpg cruising
75 mph - 18 mpg cruising
I specified cruising because these are the mileages that I see while maintaining those speeds, your tank avg. will most likely be less unless you cruise for 1 full tank with no city driving or idling. If you are all alone on the road expect your mpg to fall slightly because of wind drag. If you are on the interstate behind a truck, you can push your mpg slightly higher. Wind drag is a big factor in mpg.
I'm not buying the 23mpg tank average on 35's unless you are coasting down hill or being towed! lol
DMAX FTW!!
Here is where you should be based on my experience with my truck (43k miles, LMM 4x4, 245x75r16, CCSB, 400rwhp EFI tuning by JoshH)
65mph - 22mpg cruising
70 mph - 20mpg cruising
75 mph - 18 mpg cruising
I specified cruising because these are the mileages that I see while maintaining those speeds, your tank avg. will most likely be less unless you cruise for 1 full tank with no city driving or idling. If you are all alone on the road expect your mpg to fall slightly because of wind drag. If you are on the interstate behind a truck, you can push your mpg slightly higher. Wind drag is a big factor in mpg.
I'm not buying the 23mpg tank average on 35's unless you are coasting down hill or being towed! lol
DMAX FTW!!
I actually have gotten 23 one time and 26 another. the time I got 23 I was running stock 245's and runing 55 for 300 miles and when I got 26 I had a really strong tailwind for 150 miles. generally speaking I get around 19-21 running 65-70 for my so cal commute which is along the foothills so some up and down, 46 miles round trip.
you wanna share that tune? :hello: :hug: :beerOops, I see this has been discussed. I just got excited and immediately replied without reading the rest of the thread... I'm still interested in trying it though.
Last edited: