Thread: gas mileage

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  1. #21 Re: gas mileage 
    SE Level Member kenizzle36's Avatar
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    Ok I must be doing something wrong. My GT is only getting on average 22 or less. With a lot of highway driving.
    99 GP GT- Bosal mufflers, Custom intake.
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  2. #22 Re: gas mileage 
    SE Level Member hklvette's Avatar
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    '05 GTP currently getting about 28 on the DIC, 90%+ highway. I've noticed that its really sensitive to fuel quality, as it can drop by 2mpg or more if I switch from my usual gas station.
    '05 silver GTP, '98 Cherokee, '78 M880, '70 M35A2

    "Drag racing is for fast cars. Autocross is for fast drivers."
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  3. #23 Re: gas mileage 
    SE Level Member gpgt98's Avatar
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    When I drove to Tennessee at the beginning of March, i got an avg of 31mpg all the way down. I was really impressed and it was the first road trip in my car since owning it and put that rebuilt engine to the test
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  4. #24 Re: gas mileage 
    The mod from over yonder TheOtherNick's Avatar
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    11 in town, 22-23 highway.
    01 gtp-big cam e85 dd 78dodge- guzzling fuel 05 cummins- rollin coal
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  5. #25 Re: gas mileage 
    GTX Level Member Neil98gt's Avatar
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    98 gt coupe.. Completely stock, 101k and I get 17 city and 27+ highway. On the first road trip in this car last summer I got 30 mpg with 4 adults and a trunk full of camping gear
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  6. #26 Re: gas mileage 
    The Blue One blueguy's Avatar
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    Quote Originally Posted by 02 WS6 TA View Post
    Yep. If it keeps messing with me, ya'll are going to see an LS4 GTP.
    Gawd I hope not.

    Quote Originally Posted by TheOtherNick View Post
    11 in town, 22-23 highway.
    On teh corn.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
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  7. #27 Re: gas mileage 
    GXP Level Member 02 WS6 TA's Avatar
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    Quote Originally Posted by bluegtp91 View Post
    Gawd I hope not.


    Ah, ye of little faith... My LS4 is a bit different than GM's idea of it.
    I may say rude things but learn to take a joke. The internet is funny when you can laugh.
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  8. #28 Re: gas mileage 
    Killa Bee Scottydoggs's Avatar
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    did a little road trip today was up to 33.7 at 65 mph, then hit a wall of traffic and it dropped like a rock to 14.0

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  9. #29 Re: gas mileage 
    SE Level Member yeacashgpgt2002's Avatar
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    i only get 300km to a full tank what is wrong with my car lol
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  10. #30 Re: gas mileage 
    The mod from over yonder TheOtherNick's Avatar
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    Quote Originally Posted by bluegtp91 View Post

    On teh corn.
    And I drive about 4 miles a day. So 11 is pretty good.
    01 gtp-big cam e85 dd 78dodge- guzzling fuel 05 cummins- rollin coal
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  11. #31 Re: gas mileage 
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    Quote Originally Posted by 02 WS6 TA View Post
    Ah, ye of little faith... My LS4 is a bit different than GM's idea of it.
    I'd like to see a proper LSX instead of this Al block nonsense.

    Al blocks transfer too much heat to the tranny, cooks 'em.

    As if they weren't weak enough already.
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  12. #32 Re: gas mileage 
    GXP Level Member 02 WS6 TA's Avatar
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    I never said anything about a 4T65...
    I may say rude things but learn to take a joke. The internet is funny when you can laugh.
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  13. #33 Re: gas mileage 
    The Boss Iceman6669's Avatar
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    My 2 door GTP I can get about 24-26 city. I went on a 3 hour road trip a few weeks ago and i got like 29 on the highway. I need a tune up and beat the S**T out of it way too much. About half of all my driving is on the highway though.
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  14. #34 Re: gas mileage 
    GXP Level Member Tuner-Extraordinaire's Avatar
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    I tend to get 23mpg when cannonballing across the country at average speeds of 85 with stops. I'll let you guys fill in the blanks as to what the low/highs are on that.
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  15. #35 Re: gas mileage 
    GTP Level Member dmahlikGT's Avatar
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    Based on my quick head-math skills im getting roughly 18-20 city with a semi heavy foot, i rarely do highway driving but i ve done a straight 60-70mph before and my gas needle barley moved for a while.But now i get roughly 300 miles to a tank.Mods do help too cuz when i was stock i would get 250-280 consistently, now 280-300 all the time.
    04 GTP-3.6 pulley, custom tuned, Intake, headers,thrush exhaust, al104 plugs, 180* stat, shift kit, flipped mounts

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  16. #36 Re: gas mileage 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Well I took it on its first road trip since fixing my burned o2 sensor after my header install. I had to go fix my sisters car which is roughy 90 miles away and I doing about 65-70 like the whole way I got 27-29 prolly. I didnt use a calc to be exact, but its close to that.

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  17. #37 Re: gas mileage 
    SE Level Member postalc38's Avatar
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    I get about 25 with about half and half city/hwy. But I also have the 3100.
    2000 GP - 157K (DD/Crash damaged project)
    1995 Olds Aurora L47 - 222K
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  18. #38 Re: gas mileage 
    Donating Users Taz Magister's Avatar
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    I get about 12...
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  19. #39 Re: gas mileage 
    GTP Level Member dmahlikGT's Avatar
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    Quote Originally Posted by Taz Magester View Post
    I get about 12...
    Lmao.how?
    04 GTP-3.6 pulley, custom tuned, Intake, headers,thrush exhaust, al104 plugs, 180* stat, shift kit, flipped mounts

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  20. #40 Re: gas mileage 
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    racecar
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