Thread: gas mileage

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  1. #81 Re: gas mileage 
    GXP Level Member Tuner-Extraordinaire's Avatar
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    1mpg if that.
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  2. #82 Re: gas mileage 
    GrandPrix Junkie The Guz's Avatar
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    I took a 2 hour trip the other day and averaged 30.3 mpg's.
    1999 GP GT 18" Boss 353 Concave|SLP CAI|Borla Cat Back|Plog|HV3|HV TB|ER Rockers|Custom Retrofit Projectors|GMPP Lowering|GMPP Handling|MPD F1|Full Diode Dynamic LEDs
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  3. #83 Re: gas mileage 
    GXP Level Member Tuner-Extraordinaire's Avatar
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    I averaged 32mpg for 3hrs @ 70 the other day.
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  4. #84 Re: gas mileage 
    GTP Level Member joshv's Avatar
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    i get 18 mpg's in city with a turbo 5.3L and 27 on the highway

    2005 GXP / Cartuning Turbo Kit / meth / Cutout / Ported LS4 intake Manifold / HP Tuned / Custom 3" Cat-Back / Highflow Cat / SSC Springs / Poly Dogbone Mount's / 2nd Tranny /
    ( p/o track time12.6@109mph 1.7 60ft )
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  5. #85 Re: gas mileage 
    GTP Level Member AjL227's Avatar
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    Now that the weather has started to cool down significantly here in the Midwest, I've been seeing ~15mpg with E85. It is almost time for pump gas again.
    '04 CompG "WS6"
    '00 2.5RS "GM6"
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  6. #86 Re: gas mileage 
    GTX Level Member f3racer's Avatar
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    Quote Originally Posted by joshv View Post
    i get 18 mpg's in city with a turbo 5.3L and 27 on the highway
    jesus thats what i get with an almost stock gxp.
    SSG US Army Military Police
    2006 Grand Prix GXP
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  7. #87 Re: gas mileage 
    GTP Level Member joshv's Avatar
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    Quote Originally Posted by f3racer View Post
    jesus thats what i get with an almost stock gxp.
    yea im also open dump, but my driving habbits have been not soo hard on the pedel, so i am imagining that will change

    2005 GXP / Cartuning Turbo Kit / meth / Cutout / Ported LS4 intake Manifold / HP Tuned / Custom 3" Cat-Back / Highflow Cat / SSC Springs / Poly Dogbone Mount's / 2nd Tranny /
    ( p/o track time12.6@109mph 1.7 60ft )
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  8. #88 Re: gas mileage 
    GT Level Member popeyenate's Avatar
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    straight highway i can roll 28-31, but city and mostly what i get, 18-20. i love to drive spirited. if i slow it down a bit i can get 21-23 avg. only drive 7 miles to/from work a day.
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  9. #89 Re: gas mileage 
    GTX Level Member
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    502 out of a full tank
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  10. #90 Re: gas mileage 
    GTP Level Member joshv's Avatar
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    ****ty weather and now were on ( winter gas ) mpg's is now 15 its still worth it, car wont be out untill summer gas is back on

    2005 GXP / Cartuning Turbo Kit / meth / Cutout / Ported LS4 intake Manifold / HP Tuned / Custom 3" Cat-Back / Highflow Cat / SSC Springs / Poly Dogbone Mount's / 2nd Tranny /
    ( p/o track time12.6@109mph 1.7 60ft )
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  11. #91 Re: gas mileage 
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    17-18 City when normal driving. 10 when lead foot takes over. Highway highest was 30 @75
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  12. #92 Re: gas mileage 
    GTP Level Member mrlogic1234's Avatar
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    My GTP got me around 250 miles to a full tank. As for the GXP, I've had it for less than a week, and I'm on approaching fill up #2. I picked it up with a full tank. I drove the *bleep* out of the GTP and of course just like any other LS4 rookie, I've had a heavy foot since I picked it up Thursday afternoon.
    Ryan
    2000 GTP Coupe Green/Grey - SOLD!
    2008 GXP Black/Ebony
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  13. #93 Re: gas mileage 
    GT Level Member EJRJR91's Avatar
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    my 02's at 108k on the odometer, and i get about 20-22 mpg, thats a mix of thruway and city tho
    2002 Pontiac Grand Prix SE --> Audio, Lighting, Exterior
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  14. #94 Re: gas mileage 
    Donating Users Durk Diggler's Avatar
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    Flat highway at 55 I see b/w 32-34mpg on my scan gauge.
    Durkz 04 Silver GT2
    DHP'd, Comp G'd, looking for more speed
    http://www.grandprixforums.net/zzps-new-website-2-53834.html#post678234


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  15. #95 Re: gas mileage 
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    '94 3.1L-- I usually get about 30 mpg highway. The max that I've measured was just over 32mpg on a long-distance trip.
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  16. #96 Re: gas mileage 
    I live here. SlowNA06's Avatar
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    Quote Originally Posted by Durk Diggler View Post
    Flat highway at 55 I see b/w 32-34mpg on my scan gauge.
    Durkz 04 Silver GT2
    DHP'd, Comp G'd, looking for more speed
    Er... what do you drive?
    Irridium spark plugs last 100k mi and work just as well as copper. Copper is a waste on N/A and only lasts 15k mi. Don't use Platinum.
    Use 195* tstat unless you can thoroughly explain why not; 99.9% don't need a lower temp.
    Almost any oil filter, ever, is of higher quality than ACDelco. Spend $6+.
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  17. #97 Re: gas mileage 
    GT Level Member 00GT's Avatar
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    I get about 17-18 city, 26 highway
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  18. #98 Re: gas mileage 
    GT Level Member WolvesSoulZ's Avatar
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    My winter MPG are currently : 13mpg/city with a semi-light foot and 24mpg/highway at 75mp/h.
    In the summer I think it was, 15mpg/city with a hard foot or 18mpg/city with a light foot, and around 26-28mpg on the highway at 75mp/h.

    This is a N/A GT using 91 octane.
    2000 GT - L67 swapped SOLD | 2004 GT1 - Winter Beater - SOLD
    2004 GTP Comp-G - 3.3"/3.2", XP, #50 , 4" MAF, SD's, 180*, AL103's, HAI, Tuned, 06+ Dual pistons brakes, STB's, SSC's and FE3.
    2011 Audi A6 S-Line - Also Supercharged
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  19. #99 Re: gas mileage 
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    Summertime, on a 300 mile round trip I would average right at 30 mpg; some days I could get it to 32 mpg. My trips back and forth to work (38 miles round trip) I usually avg 27-28. Wintertime, currently 23 mpg, and that is with it idling in the driveway for 10 minutes of a morning. I average 325 miles to a tank, but I could stretch it further. I usually fill up with 89 octane when the fuel gauge is a mark below 1/4. Car is a GT with 133K miles. Originial plug wires and fuel filter.
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  20. #100 Re: gas mileage 
    Killa Bee Scottydoggs's Avatar
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    Quote Originally Posted by Logan541 View Post
    502 out of a full tank

    i hate you! im kidding of course. most i ever got was 300 ish

    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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