Mpg

Discussion in 'GM Duramax 6.6 (LLY)' started by RodZZilla, Apr 2, 2007.

  1. RodZZilla

    RodZZilla Well-Known Member

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    Finally was able to get some decent data. Too many morinings up til now I had to let the ol girl warm up. Had to rack up a couple of road trips this weekend. First one was 300 Miles at mostly 55-60 on 2 lane highway yeilded 17.9 MPG. Second one was a little over 400 at 75-80 on the Interstate with some strong head and cross winds plus about 50 miles of in town driving. That tank got 16.25. Sure beats 8-10 I got w/the 7.4 :pimp:
     
  2. RodZZilla

    RodZZilla Well-Known Member

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    Update

    Downloaded the PPE Hot+2 on the 90HP setting and installed a Kenedy Boost stick. Mileage jumped to 22.3.
     
  3. miniwally

    miniwally Well-Known Member

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    Is that from the computer read out or hand calculated.

    The tuners mess up the computer read out. You will have to hand calc.
     
  4. RodZZilla

    RodZZilla Well-Known Member

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    Hand Calc:D
     
  5. limitedstreet

    limitedstreet Member

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    I don't even get close!

    I have a 05 3500 2WD CC Dually and get 12.5 empty @ 68-70MPH. Totally stock. Do you have any suggestions on what chip to get?
     
  6. RodZZilla

    RodZZilla Well-Known Member

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    I saw 4 MPG improvement when I went to the PPE on the 90 HP setting. Still OK on the tranny.
     
  7. ECUYJ

    ECUYJ New Member

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    Alright well I am in the market for a programmer or chip because my hand calculated average is about 14.5 with half in town and half on the highway at 70-80. Trying to figure out what people have and how they like it.
     

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