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fuel mileage lb7

  1. Mpg ?

    01-04.5 LB7 Duramax Powertrain
    Ran through my first tank and got 18.2 mpg. 90% of my driving is highway (with the cruise)and about half the highway I [email protected] 75mph. What's the sweet spot for mileage on these rigs. Also what is everyone else *really* getting. I'd like to see her at 20. I'll be getting a programmer soon and I...
  2. Mpg decrease

    01-04.5 LB7 Duramax Powertrain
    My 2002 lb7 has the edge juice with attitude installed and had 265/70/16's on the stock alloy wheels. Summer time on stock power level I would get about 13.5 mpg; level 1 gave about 14-14.5; level 4 gave about 15.5. Well I had discoverer stt 265/70/17's put on and now level 4 is giving me an...
  3. Lb7 mpg

    01-04.5 LB7 Performance Parts Discussion
    I have an 04 LB7, i bought the banks sitnger system came with exhaust, tuner, air box and wastegate actuator. Im getting 15 to 16mpg around town not driving crazy or pulling any wieght, what can i do to get better fuel economy? It might all be bs but i have talked to people with the same rig as...
  4. Bad MPG

    Alternative Fuels Diesel Additives Lubricants
    So ive noticed recently ive been getting bad mileage, about 15.5 MPG cruisen at 65-70 MPH, did i put in a bad batch of fuel? Anyone got ideas? My 2005 cummins got about 23-24 cruisen at the same speed, it had intake but thats the only real difference..:help
  5. Went from 14 mpg to 18.7 using Lucas

    Alternative Fuels Diesel Additives Lubricants
    Just bought the truck a couple of days ago. At first it got 14mpg avg with mostly freeway driving. Read up on additives and decided just to try the Lucas first. Drove 270 miles yesterday with 50 of that in town miles. Averaged 18.7mpg. My freeway speed is 80mph which for me is 2500rpm. It...
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