Dynawide
Well-Known Member
- Thread starter
- #1
2019 XLT with stock drivetrain aside from 265/70/17 tires. Been running a couple different 5 Star tunes, have tried the 87 versions of daily & performance as well as the same ones for 89 octane and a 91 octane performance one. With any of them the truck shifts great, responds to throttle inputs instantly, etc however the gas mileage has been downright dismal. I have tried to drive as if I have an egg under my foot and am lucky if I can get 19.5 mpg on flat runs and yes that mileage is calculated at the pump. Doesn't matter which tune is in as they offer horrible mileage. Been hoping maybe it's a combination of the cold weather, winter gas, blah blah but as it has warmed up nothing has changed. So I swapped back to the stock tune and instantly the mileage is in the 22-23 range driving the same roads, the same speeds, etc.
Has anyone had any success with a tune offering at least enhanced transmission operation and mileage at least comparable to stock if not even better? I like the way the truck drives with the tune but I am not going to continue to do so & lose 5-6mpg.
Thanks
Has anyone had any success with a tune offering at least enhanced transmission operation and mileage at least comparable to stock if not even better? I like the way the truck drives with the tune but I am not going to continue to do so & lose 5-6mpg.
Thanks
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