Thread: gas mileage

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  1. #61 Re: gas mileage 
    SE Level Member Paramedic's Avatar
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    Actually got 29 - 30 the other day on my way to work, 110 kms.
    You call, we haul.
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  2. #62 Re: gas mileage 
    SE Level Member gpgt98's Avatar
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    Update: ran seafoam thru gas tank and vac lines, then changed oil, plugs and wires, air filter, fuel filter and now gettin 24.5 around city. Did the tune up before I left for a concert in Detroit area Saturday and got 33.9 on highway. Got 390 miles out of that tank and was stuck in a dead stop traffic jam in Detroit for an hour.
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  3. #63 Re: gas mileage 
    GTX Level Member bandits grand prix's Avatar
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    i hit 27 mpg on the highway last week. thats about the highest ive seen it go.
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  4. #64 Re: gas mileage 
    SE Level Member Smile's Avatar
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    im rockin 12L/100km avg 540 kms / tank (canadian)
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  5. #65 Re: gas mileage 
    SE Level Member ChrisW2k5's Avatar
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    Quote Originally Posted by Smile View Post
    im rockin 12L/100km avg 540 kms / tank (canadian)
    540 @ 12? Wow you must have a larger tank then me. at 11 I can only get about 450 (canadian numbers)
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  6. #66 Re: gas mileage 
    SE Level Member yeacashgpgt2002's Avatar
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    Quote Originally Posted by Paramedic View Post
    715kms, 25 - 26 Highway

    2000 GP GT
    how in the hell does your gt get that kind of mileage
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  7. #67 Re: gas mileage 
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    highway only, using most of the tank.
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  8. #68 Re: gas mileage 
    GTX Level Member 98L36's Avatar
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    Driving 8 miles everyday to school (with 4 stop signs and 3 turns in between home and school) I've been averaging 21MPG driving the speed limit with cruise on. Haven't ran the tank full-empty yet, but, assuming the "fuel used" number is correct my numbers using the odometer and paper method is almost dead on to the number my DIC shows me. I've only had it on the interstate twice since owning it, but the first time I was getting 33MPG and the second was also around 32-33.
    White '98 GT Coupe - Autopia Fog Housings w/ 4300k HID's + LED Rings
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    The HWG Thread = Winning.
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  9. #69 Re: gas mileage 
    SE Level Member mayoke's Avatar
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    2002 GP GTP - 159,000miles - No mods.

    I can get about 16-17 in the city. On the highway cruising at about 75-80, I see about 25-27. Best combined I did during a work week was 19.8 and that was mostly because I had avoided most of the traffic.

    Seems to be about the same mileage I got out of my 2004 WRX wagon. I'm happy being how heavy the car is and the mileage.

    *EDIT* On my last road trip to Santa Rosa Beach, Fl. (Stayed at Watercolor. BEAUTIFUL!) 637mi - myself and fiance in car plus two carry bags - DIC showed 25.1mpg. Cruise was set at 78-80 most of the trip both ways.
    Last edited by mayoke; 09-23-2011 at 07:35 AM. Reason: Put in mileage from trip.
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  10. #70 Re: gas mileage 
    SE Level Member yeacashgpgt2002's Avatar
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    20 bucks will only bring me 100km in the city and mabey 115km on the highway
    i only 300 km on a full tank
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  11. #71 Re: gas mileage 
    SE Level Member elhomero's Avatar
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    Combined MPG for the past few weeks of 60-40 Highway and Edison traffic

    21.6 MPG

    I guess that K&N drop in airfilter helped big time, it used to be 18.8 combined from my commute to work. I feel dumb buying the airfilter because...I think I'm just going to make a CAI eventually.
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  12. #72 Re: gas mileage 
    GTP Level Member AjL227's Avatar
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    I'm seeing 16-18 MPG with E85. 21-22 with 93 octane.
    I thought my gas mileage was poor, now I don't feel so bad.
    '04 CompG "WS6"
    '00 2.5RS "GM6"
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  13. #73 Re: gas mileage 
    SE Level Member Wisconsingrandprix's Avatar
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    22 mpg but i have a **** tune so......
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  14. #74 Re: gas mileage 
    Moderator dsmuts's Avatar
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    I get 25 with more in town driving than highway.
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  15. #75 Re: gas mileage 
    SE Level Member ibhuff's Avatar
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    I usually average around 16.5 mpg and 220 out of a tank. But I deal with san diego traffic, which isn't as bad as L.A. Traffic but the people are even stupider. I've seen up to 33 mpg on the highway when running it as soft as possible.
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  16. #76 Re: gas mileage 
    SE Level Member OldFart's Avatar
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    2001 GTP, purchsed a couple weeks ago.

    17-18 mpg but the car was new to me and I had a heavy foot for a while

    Reset the DIC before a 2 hr highway drive and was pleasantly surprised to get 30 mpg.

    Since then 21-22, mostly in town. (Small town, not city)

    So far I'm pretty pleased
    I'm getting near the end of a full tank of fuel so I'll be doing the calculations the old fashioned way to see just how accurate the DIC is.

    Monday I'll be doing an oil change, plugs, wires, fuel and air filters, plus investigating a check engine light. Can this get better? I can hope!
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  17. #77 Re: gas mileage 
    GTX Level Member tod1d's Avatar
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    I've been using Fuelly | Share and Compare Your MPG to keep track of my L/100km's
    Date KM L L/100Km $$$/L
    29/09/11 620.1 59.24 9.6 1.009
    15/09/11 647.0 58.33 9.0 1.089
    03/09/11 205.0 20.03 9.8 1.064
    31/08/11 546.1 53.54 9.8 1.084
    19/08/11 571.0 53.37 9.3 1.039
    09/08/11 520.0 50.03 9.6 1.049
    01/08/11 310.0 26.70 8.6 1.139
    01/08/11 546.1 41.71 7.6 1.159
    30/07/11 324.0 30.93 9.5 1.169
    29/07/11 399.9 38.12 9.5 1.130

    2007 Pontiac Grand Prix
    http://www.cardomain.com/ride/2990036
    L26, CAI, HV3, ER Rockers, PLOG, Overkill Tune, flipped dog bones
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  18. #78 Re: gas mileage 
    SE Level Member OldFart's Avatar
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    Gotta love those Alberta fuel prices eh?

    My mileage might be better but it's still costing you less per Km
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  19. #79 Re: gas mileage 
    SE Level Member soccerboi11's Avatar
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    I have a 01 gtp I generally get 22-23 mpg. However I do have a heavy foot. but that is a mix of alot of highway and a bit of city tho. I also usually get around 350-400 miles to a full tank
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  20. #80 Re: gas mileage 
    Moderator dsmuts's Avatar
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    How much should i expect my gas mileage to go up from throwing 1.9's on it?
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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