Pontiac GTO 2004-2006 The Modern Goat

What are you averaging for fuel economy?

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Old 09-27-2004, 12:19 AM
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Default What are you averaging for fuel economy?

It is strange, but my fuel milage seems to me going up as my LS1 breaks in. Right now I average 17.2 mpg and it goes up every week. I used to get 14 when I first got it. Just curious if this is the norm. I do mostly city driving.
Old 09-27-2004, 12:43 AM
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Haven't put but two tankfulls through mine yet, but I managed 1 MPG better on this last tank vs. the first one. I'm only at roughly 600 miles on the clock though We'll see how it goes after a couple K
Old 09-27-2004, 02:40 PM
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Originally Posted by ZtwentyATE
It is strange, but my fuel milage seems to me going up as my LS1 breaks in. Right now I average 17.2 mpg and it goes up every week. I used to get 14 when I first got it. Just curious if this is the norm. I do mostly city driving.
mine is doing that also, maybe weather or its just breaking in.
Old 09-27-2004, 09:08 PM
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im getting like 12-18 mpg
Old 09-28-2004, 12:11 PM
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I'm getting around 14.5 mpg, with around 1200 mi on the ticker
Old 09-28-2004, 12:19 PM
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18.3 when I pulled into the garage last night. My DIC is pretty accurate to what I get figuring the old fashioned way and actually is slightly pessimistic. So it could really be 18.5.

On the highway last summer when I took it our to Freeport, I got 26mpg.
Old 09-28-2004, 12:53 PM
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i'm about 14.
Old 09-29-2004, 01:32 AM
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On the highway last summer when I took it our to Freeport, I got 26mpg.[/QUOTE]



****, I drove from Thousand Oaks to Long Beach and back last month on a quarter tank. Works out to be 140 miles round trip on 4.5 gallons...or 31 mpg.
Old 09-29-2004, 07:11 AM
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I'm still breaking it in and mileage isn't that good. Averaging around 11-12 mpg. But I'm taking it up to 3000-4000 quite a bit and I don't use overdrive.
Old 09-29-2004, 09:27 AM
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Originally Posted by ZtwentyATE
On the highway last summer when I took it our to Freeport, I got 26mpg.


****, I drove from Thousand Oaks to Long Beach and back last month on a quarter tank. Works out to be 140 miles round trip on 4.5 gallons...or 31 mpg. [/QUOTE]

I forgot to mention that on a few stretches of empty highway I ran it well past 100mph a few times.
Old 09-29-2004, 01:06 PM
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I'm still on the first tank But its reading 18.3 with quite a few WOT blasts to break her in. Mostly low speed back roads with an occasional highway.
Old 09-29-2004, 11:41 PM
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Are you guys using the 1>4 shift light? Can someone please explaing that thing to me...sometimes mine comes on sometimes it doesnt? And when it comes on, must I shift to 4th?
Old 09-29-2004, 11:46 PM
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Originally Posted by CMNTMXR57
****, I drove from Thousand Oaks to Long Beach and back last month on a quarter tank. Works out to be 140 miles round trip on 4.5 gallons...or 31 mpg.
I forgot to mention that on a few stretches of empty highway I ran it well past 100mph a few times. [/QUOTE]



HAHA, 100+ mph feels too much like cruising in these things. 100 feels like 80. 100 in my Z28 felt like....well 100.
Old 09-30-2004, 07:05 AM
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Originally Posted by Nicster
Are you guys using the 1>4 shift light? Can someone please explaing that thing to me...sometimes mine comes on sometimes it doesnt? And when it comes on, must I shift to 4th?
When you're above a certain engine temp and you push the throttle down a certain amount, this solenoid forces you to shift to fourth. You can drive around it or get the skip shift eliminator. I've just been giving it a little more throttle when it comes on. It goes out then I can shift to second. I've got the eliminator from my Camaro but i've been too lazy to install it.
Old 09-30-2004, 10:33 AM
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Yup Ztwentyate, This car is soo quiet (inside), yet powerful and poised that triple digit speeds seem like what 55 is to most others.

Nicster,
That is "CAGS" (Computer Aided Gear Selection). GM has done this on M6 cars to help economy numbers. There is a certain criteria where it intervenes but it has to do with throttle position, speed and a few other things. If you goose the gas enough from every stop, you'll override it and it work intervene. Otheriwse you can get a CAGS eliminator and be done with it as a whole. Most of us here have overriden this annoying feature. I almost got T-boned in my Camaro one time because of it and I swore up and down to override it in any T56 car I own.
Old 09-30-2004, 05:52 PM
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well, ive had car 2 weeks and still have over 1/2 tank....of wait, thats because stupid me wanted my spoiler removed and the 2-3 days to do it turned into 10....i pick it up tomorrow....i saw it today.....it was worth the wait....i cant stand that dang spoiler....
Old 09-30-2004, 08:55 PM
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I just traded in my '04 with 10k miles on it. It was a M6 car too. I drove highway/city mix and I always averaged at least 20MPG. Strictly highway at 75-80mph I got 23-25MPG. Strictly highway at 55-60mph it would get 25-27MPG. All around town, it got alot worse but I never got 10-15MPG or anything like that!
Old 09-30-2004, 09:04 PM
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mine has gone up to i have almost 1000 miles when i first gt it it was 14mpg
now im getting 18 to 19 not to bad just have to keep my lead foot out of it.
Its hard though.

steve
Old 09-30-2004, 09:24 PM
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On this last tank I am up to 17.9 now. Damn.....

Camaro averaged 15 tops
Old 10-01-2004, 09:03 AM
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Originally Posted by tohigh4you
well, ive had car 2 weeks and still have over 1/2 tank....of wait, thats because stupid me wanted my spoiler removed and the 2-3 days to do it turned into 10....i pick it up tomorrow....i saw it today.....it was worth the wait....i cant stand that dang spoiler....
FYI, you could've just taken the car home and removed the spoiler yourself in 15-20 minutes.

Yea, I know the holes would still be there, but at least you'd be driving it.


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