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  1. #1
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    Default Gotta brag to someone...

    Most of the world wouldn't really care. But I just drove my '04 GP to Michigan and back, and got some fantastic "performance" numbers:

    Tank 1: 34 MPG
    Tank 2: 36 MPG
    Tank 3: 30 MPG (included local driving near my vacation spot)
    Tank 4: 33 MPG
    Tank 5: 32 MPG

    So - I drove about 2,100 miles on 5 tankfuls.

    And BTW I passed 290k on original drivetrain. Not to mention, the interior and exterior of my car look amazing- I could easily tell an uneducated person that my car is less than a year old.

    Love these cars.

    -Bob C.

  2. #2
    GTP Level Member cheatah faheatah's Avatar
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    Default Re: Gotta brag to someone...

    Nice mpg's ! And condition ain't bad for Woostah !
    not what it looks like

  3. #3
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    Default Re: Gotta brag to someone...

    Way to go bobc!
    Did you use cruise control the whole way?
    What speed were you driving?
    I thought I did good on an 800 mile trip
    When I got 27 MPG.
    2007 Antique Bronze Metalic Grand Prix GT...bone stock.

  4. #4
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    Default Re: Gotta brag to someone...

    Quote Originally Posted by LEVELX View Post
    Did you use cruise control the whole way?
    What speed were you driving?
    As much as possible, yes - I tried to keep the speed under 65MPH (mostly 64). I would adjust speeds (faster or slower) when traffic warranted, but I was able to make a lot of the trip at 64MPH.
    -BC

  5. #5
    GrandPrix Junkie SgtMarshal's Avatar
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    Default Re: Gotta brag to someone...

    my car has been getting like 20 on the highway, it's got some mods too, but I just changed the o2 sensor so maybe that will help

  6. #6
    Donating Users brettstoner's Avatar
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    Default Re: Gotta brag to someone...

    That is awesome! I average 12-13. LOL. On E85, 100% stop and go city driving. Average speed on the DIC is 12 mph.
    04 GP GT- top swap, VS cam, 3.0 pulley, E85, headers, 60 injectors, TEP 3:29 trans, Racelogic Traction Control, ZZP dyno tuned, 300 hp daily driver.

  7. #7
    I live here. stealthee's Avatar
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    Default Re: Gotta brag to someone...

    I can't wait to see what my Lancer gets when I take a trip to Norwalk later this month. I've been getting 27 mpg on my day to day trips. I might see well over 30 mpg.
    2011 Mitsubishi Lancer GTS - Stock DD mode
    1994 Dodge Stealth - Currently being revived. Modded

  8. #8
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    Default Re: Gotta brag to someone...

    Question! Perhaps to start debate or settle it.

    what coolant ya been running?

  9. #9
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    Default Re: Gotta brag to someone...

    Quote Originally Posted by brettstoner View Post
    Average speed on the DIC is 12 mph.
    Was that you in front of me in the left lane on the highway on Tuesday morning?!!!
    There must'a been 1/2 mile of traffic behind you!!!
    2007 Antique Bronze Metalic Grand Prix GT...bone stock.

  10. #10
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    Default Re: Gotta brag to someone...

    Quote Originally Posted by BigNelson76 View Post
    what coolant ya been running?
    Not sure if you're talking to me or someone else, but a few months ago I flushed and re-filled with fresh DexCool. Kinda kicking myself, but that's what is in there. Also I have a 180-degree T-stat to cut down on knock in the hot weather (I switch back to 195 for winter).
    Average speed on the DIC is 12 mph.
    Getting 12MPG at 12mph isn't bad...
    For whatever it's worth, on GM cars in general I see the DIC to indicate MPG about 6-8% higher than real world actual MPG (odometer reading vs. pump reading). My measurements were all pump/odometer based MPG, not DIC.

  11. #11
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    Default Re: Gotta brag to someone...

    Wow! Bobc455, I get barely 20 mpg with my '99 GP 3800.

  12. #12
    Donating Users brettstoner's Avatar
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    Default Re: Gotta brag to someone...

    Quote Originally Posted by LEVELX View Post
    Was that you in front of me in the left lane on the highway on Tuesday morning?!!!
    There must'a been 1/2 mile of traffic behind you!!!
    Nope. I was the one sitting in traffic behind 10 million other yuppies picking their kids up from school/daycare. LOL.

    I ended up tuning my DIC to get it reasonably accurate. But it still isn't that accurate especially running E85 with different blends depending on time of year. I can get about 19-20 mpg on the expressway on E85 but never been on a long trip to calculate it accurately. Figure that is about 25 mpg converted to gasoline.
    04 GP GT- top swap, VS cam, 3.0 pulley, E85, headers, 60 injectors, TEP 3:29 trans, Racelogic Traction Control, ZZP dyno tuned, 300 hp daily driver.

  13. #13
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    Default Re: Gotta brag to someone...

    L26, highway I averaged 24-27, doing 73-76ish mph, . 3:06 FDR.

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