Chevy and GMC Duramax Diesel Forum banner

fuel mileage lly

  1. better mpg?

    04.5-05 LLY Performance Parts Discussion
    you can see all the mods i have on my truck below, and just last week i added the lbz mp. i have the airaid intake and the edge juice with att, also magnaflow 4" turbo back. last summer before the edge and intake i was getting about 19-23 mpg everywhere then i added the intake and edge and it...
  2. evo cs mpg

    04.5-05 LLY Performance Parts Discussion
    What kind of an increase are you getting with the evo with the mileage tune? Also how good is the tow feature?
  3. Interesting MPG trial from Quad 2 (LLY)

    Gauges, Electronics and Wiring.
    Although I'm currently doing the 50HP tune trial, here's what I got, and some were totally unexpected. I may be due for a fuel filter change, at which point I'll redo the trials and post them here. The constant mods are PCV reroute and LBZ mouthpiece. This is on a 2004.5 LLY 2500HD 4x4 ext cab...
  4. fuel mileage!?!

    Alternative Fuels Diesel Additives Lubricants
    my 05 duramax lly is absolutely terrible on fuel.. im barely gettin 200 miles to the tank!! motor is bone stock is that normal? and besides a chip what can i do for better fuel mileage? my buddy has a bone stock powerstroke 6.0 and hes gettin almost 400 miles to the tank,and my other buddy with...
Top