I HAVE 03 6.0 F350 CC DRW WITH A BANKS SIX GUN DIESEL TUNNER.HOW CAN I GET MORE MPG.... 14 IN TOWN NOW

 

I get 11mpg around town.

And you have a dually and your getting more?

Somethings not right for me.

 

I would take 14 in town and like it... Alot! I am getting 12, mostly highway.

Now may the fireworks begin!!!

 

the foot determines most of it, maybe remove the tuner.

its not made for stop and go traffic so its hard to increase it. i get 11-13 around town

 

I get around 15 (hard math) in town.

 

I'm at 8!! I'd kill for 14

 

After my warranty expired, I started wrenching on my truck. Since then I have caused an exhaust leak twice. Of course, it is always in the same place between the exhaust manifold and the up pipe. With this in mind, I have noticed a trend as well. When I have the exhaust leak I loose somewhere around 2mpg, roughly (enough threads on that).
So, in my experience if you have an exhaust leak especially before the turbo, you will lose mileage. I do not know if this could be an issue for you, but it is my experience.

 

i have a drw as well. i get 15 on the highway and about 12 around town. not much you can do. just part of owning a dually. although IMO i would trash that banks!!! it caused me and my dad way to many headaches. got rid of it and put a edge on his chevy and no problems anymore. banks has good products but again IMO there tuners suck!

 

put the truck on a 2000lb diet. get it down to about 3tons and you get that mpg you wanted.

 

that would throw it down around the duramax's weight, what kind of milage are they getting?

My truck has always gotten around 16MPG (hand calculated) for my normal weekly drives between base, town and highway. It doesn't matter if I run Eric's tunes, Matt's tunes, or run the stock file.

The best I ever saw was 19.5 on a trip from Fort Polk, LA to Fort Sill, OK.

 

dads duramax gets around 21 mpg's and its a 3500 dually with a flatbed!!! its crazy!!!!!!!!!!!!

 

and it dosent tip out at 8000lbs either

 

thats very true cheezit

 

with a full tank of fuel my 06 4dr 4x4 passes that 8k mark... I think.
but hey The best so far was 1500 miles on 3/4 of a tank.. lmfao

 

do explain plz