Livernois Motorsports

Sorry to hear about your poor mileage problem, we have actually had customers see anywhere in between 1 and 4 mpg on average with our programmer installed depending on the driver! feel free to give us a call at 313-561-5500 extension 104 or ask for cody and ill be glad to help you out!

Rontbeamer

Well I just got done with an 1800 mile road trip for the holidays and I was kind of flying, 70-85 MPH during the entire trip. I averaged 18.2 MPG on my way down to Florida and 16.8 on my way back to Pittsburgh. I used 4A for a good chunk of the trip back.

2017 3.5 EB, 10 speed, 4WD, SCREW.

naimads

Is everything on yours stock? Wheels? Lift?

Rontbeamer

Bone stock

marcusmcreynolds

I'll start by saying I have only had the truck for 2 days and have only driven about 200 miles in it so far, it's also new so isn't broken in yet. I have a 6" lift and 35" tires and I see almost identical gas milage to what you're seeing. I haven't recalibrated for the tires and probably won't but I am going to 'try' and measure by calculating by tracking milage myself and the amount of gas used. See if I'm getting much better than what the computer is showing at the moment.

naimads

Thanks! That's the info I'm looking for.

I took a little road trip yesterday and tracked my mileage. The odometer on my truck read 6.349% lower than the actual mileage I drove. The ratio of the change in the diameter of my tires is 6.269%.

On flat ground at 60-65mph I was showing right under 20 mpg. That gauge seems to show better than my actual gas mileage by about 1.5 mpg.

70 mph-->17mpg (15.5)
75 mph -->14.5 (13)

Tom_with_a_Truck

Returning form the warm Florida weather to the cold weather in Pittsburgh had to be a let-down.

Tom_with_a_Truck

I just returned home from Florida this afternoon. I filled up when I got into town. I got exactly 20.0 on this tank full, calculated vs. 21.1 on the dashboard gauge.

About 1/3 of the trip was running 60-72 mph, and 2/3 75-77, with a couple of 2-lane road passing maneuvers (which were really easy to do). I drove through a few small towns on the way, and encountered the usual traffic jam in Atlanta, but otherwise, pretty smooth sailing.

I have the original Hankook 275/55R20 tires.

Growlar

I have lost almost 3mpg since its gotten cold..and my commutes 90 miles round trip all freeway.so warm up time is negligible ..tire psi was down a couple, but that still doesn't account for at 15% loss in mileage. I got 18 in the summer and lucky to get 15 now everything is the same..i cant figure it out

Tom_with_a_Truck

Gas formulation is different in the winter, depending on locality. That does affect mileage.