Fuel Economy

[The_Chupacabra]

My truck got 19mpg on the northbound trip this past weekend over 250 miles. The return trip had a hellacious head wind and I only got 14.5 mpg

 

[OldCracker29]

With colder temps and the winter gas mix, my average of 13-14 mpg goes down to about 11 mpg.

 

[drperry]

250 miles, a couple steep grades, winter fuel... 17.5MPG or so...

Not too shabby with the 54lb + Firestone M/T's on the back!

 

[svensk]

I just drove 380 miles on the new car and have more than a 1/4 tank left. Range says 105 miles left still. Not bad for the car's first ever tank of gas. I'll gas up today (18.5 gal tank) and put some better gas in than the crap they gave it to me with.

 

[drperry]

I just drove 380 miles on the new car and have more than a 1/4 tank left. Range says 105 miles left still. Not bad for the car's first ever tank of gas. I'll gas up today (18.5 gal tank) and put some better gas in than the crap they gave it to me with.

That's not bad at all!

My Blazer was on fumes at 380 miles with the same size tank

 

[svensk]

Yeah, hemikiller couldn't even get 350 miles on a tank. Max I ever pushed it was 320 and I was on fumes.

 

[drperry]

With tires that don't weigh as much as your car, my trip computer tells me I can go 550 miles to a tank

Your car is going to get better once it's broken in

 

[PenguinLTZ]

I would die of exposure at 300.

 

[drperry]

I would die of exposure at 300.

You have a 2500 with a 6.0L.... Forced air! Get some mileage!

 

[Zembonez]

So far the DIC indicates about 18.2 mpg since the BB tune (about 300 miles). It was 16.2 before I swapped modules. I'll keep you posted.

UPDATE. This has settled in at around 17.6 MPG. I'm frikkin thrilled! Better performance AND better gas mileage. WIN!

Still sitting at 17.5. I'm not at all unhappy with that for 1/3 city 2/3 highway. Justin's tune did result in better mileage and a lot better driveability.