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#130396 - 05/06/08 06:11 PM Re: fuel miles per gallon
RooK Offline
Member 		Registered: 03/07/05
Posts: 5158
Loc: Southern KY
I get that and I am modded.
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'13 Mustang 3.7V6 - MT82
'00 GP SE (L67 Swap, XP, Headers, 3.25")
'98 GTP, '01 Bonne
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#130397 - 05/06/08 06:41 PM Re: fuel miles per gallon
98greenGT Offline
Member 		Registered: 05/10/07
Posts: 1361
Loc: Chicago, IL
Quote:
Originally posted by 07GTP11:
Question how good are the driver information center on gtp? Everywhere i drive which is all highway i get around 28 and in city around 23 ? maybe cause im not that modded yet?
I thought you said you were running 13's? That to me means you're modded.
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1998 Pontiac Grand Prix GT
WizAired CAI, Impala 12" Brake Upgrade, ZZP Alternator Rewire and Voltage Booster, Rotated Dogbone Mounts, Kicker KS690 6x9s, JBL GTO427 4s, JBL P652S 6.5s
2001 Ford F150 XLT SuperCab
Stock, LineX, 212K
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#130398 - 05/06/08 06:57 PM Re: fuel miles per gallon
RooK Offline
Member 		Registered: 03/07/05
Posts: 5158
Loc: Southern KY
Quote:
Originally posted by 98greenGT:
Quote:
Originally posted by 07GTP11:
[b] Question how good are the driver information center on gtp? Everywhere i drive which is all highway i get around 28 and in city around 23 ? maybe cause im not that modded yet?
I thought you said you were running 13's? That to me means you're modded. [/b]
Long story about that... previous owner said it ran 13s, but the engine bay is completely stock.
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'13 Mustang 3.7V6 - MT82
'00 GP SE (L67 Swap, XP, Headers, 3.25")
'98 GTP, '01 Bonne
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#130399 - 05/07/08 09:14 PM Re: fuel miles per gallon
Keith Herrington Offline
Member 		Registered: 04/11/08
Posts: 75
Loc: Severna Park, MD
Can anyone explain why my mileage dropped from 25.5mpg to 22.5mpg when I shifted to 93 octane? The car drives great but I don't think I'm driving it any harder than I did before. It's a combined highway/city loop about 100 miles long a day and rarely varies.
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#130400 - 05/07/08 09:51 PM Re: fuel miles per gallon
72chevman Offline
Member 		Registered: 09/27/07
Posts: 1575
Loc: Where Dorthy,Toto & Wicked Wit...
Is your car supercharged? If not, no reason to run 93 Octane, in fact 91 is the norm.

Some refineries use 10% alcohol to raise the octane rating. Alcohol has less BTUs per gallon so it takes more to get the power out of it.
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03 GT, STB, GM HD sway bars, 35% tint, GE893(37watt)fogs, Flowtech Terminators, 180 T-stat, ZZP DP & PCM, Ceramic PLOG & Crossover, 18" glasspack, 2007 17" Mustang Bullits 235/55/17 Pirelli PZero Nero, 12" R1 D\S rotors, gutted air box, GTP radiator
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#130401 - 05/07/08 10:29 PM Re: fuel miles per gallon
ThunderBat Offline
Member 		Registered: 03/11/04
Posts: 5176
Loc: Virginia
I get around 22-24 back and forth to work and some of that commute is highway...On a trip running between 70-75 I usually get 27...if I slow down to 65 on cruise it will do 30. I dont think thats bad considering the GT has the highest numerical gear ratio.
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Thoughts from the Highway of Life www.tobthebat.wordpress.com
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#130402 - 05/07/08 11:07 PM Re: fuel miles per gallon
soulonfire11 Offline
Member 		Registered: 07/27/07
Posts: 235
Loc: Chicago
ha im getting 24 city right now since my fuel pump is shot and i cant bring the engine above 3200rpms so i went from 17 city to 24...i guess thats the only good thing about a dying fuel pump
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#130403 - 05/08/08 07:21 AM Re: fuel miles per gallon
Keith Herrington Offline
Member 		Registered: 04/11/08
Posts: 75
Loc: Severna Park, MD
72chevman,
Yup, my car is a GTP. Your comment about using alcohol to raise octane makes sense. I use Shell exclusively and their ratings are 87, 89 and 93 in the Baltimore/DC area where I live.
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#130404 - 05/14/08 09:26 AM Re: fuel miles per gallon
Lizardthing88 Offline
Member 		Registered: 05/02/08
Posts: 32
Loc: Cincinnati
Congrats to all who have great gas mileage. I have not checked in quite a while but will be doing so shortly. Gas just hit $3.95 here yesterday. I think I might trade the GPGT in for a gasoline tanker truck. I wonder if the fuel companies are hiring? I thought we were winning the war on TERROR. Hmmmm... now who is the bad guy? Sorry, just had vent alittle and I don't mean my tank.LOL *humor*
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“The more is given the less the people will work for themselves, and the less they work the more their poverty will increase.” Leo Tolstoy (1828 – 1910) Russian novelist and philosopher
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#130405 - 05/14/08 09:21 PM Re: fuel miles per gallon
07GTP11 Offline
Member 		Registered: 02/15/08
Posts: 64
Loc: Corpus christ , Texas
I am wrong about my gas miles! The reason i was getting that kinda miles is cause i almost reset it everytime. I was reading another deal and hercman was saying dont mes with it and by the end of your tank it should be pretty close to what your getting and im getting around 19.8 or so but if i get on it it drops to about 14 but that was my mistake.
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98 GTP Coupe ubend delete, CAI, Alpine sound system
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