#137171 - 02/10/07 01:20 PM
Re: MPG
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Registered: 04/30/06
Posts: 3201
Loc: Groton, CT
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That's hacking me off too! hah :rolleyes:
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 '97 SE with alot of mods
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#137172 - 02/10/07 10:28 PM
Re: MPG
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Registered: 03/07/05
Posts: 5158
Loc: Southern KY
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My 3100 depends. Worst I've seen is 24, best is right at 30mpg. The latter is with a lot of I-75 travel, but there are a lot of hills between here and Richmond making for a lot of downshifts.
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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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#137173 - 02/11/07 10:16 AM
Re: MPG
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Registered: 11/03/06
Posts: 363
Loc: Green Bay Wisconsin
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going up north i was averaging 34.1. Drafting a semi -  - 38.6 hehe
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 CAI, 180deg thermostat If Your Drinking A Coke Please PM Me The Code Eh?
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#137174 - 02/11/07 11:19 PM
Re: MPG
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Registered: 12/17/02
Posts: 241
Loc: Rockledge, Florida
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I can get about 28 highway most of the time, but I sure would like to get 30+. My '98 GT is stock, with the exception of MSD plug wires. Any thoughts on how I can push the MPG up in the 30 range would be greatly appreciated!
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#137175 - 02/11/07 11:42 PM
Re: MPG
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Registered: 02/09/07
Posts: 167
Loc: Kentucky
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I think I am going to just start driving like a grandpa and not do over 35. I'm sure gunning it at lights is not helping mine what so ever, or my transmision :rolleyes:
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--Kevin--
2005 Grand Prix GT
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#137176 - 02/12/07 02:59 PM
Re: MPG
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Registered: 01/08/07
Posts: 6026
Loc: Des Moines ,Iowa
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GOSH SOMEONE NEEDS TO HELP ME OUT lol i am only getting like 17mgp thats basicly all in town driving and about 40 miles round trip out of town every once and a while. i need some searious help though if everyone is getting high 20s to mid 30s
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#137177 - 02/12/07 06:59 PM
Re: MPG
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Registered: 04/18/05
Posts: 8901
Loc: Bradenton, FL
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im only getting around 17..but it is time for a tune-up
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Corey Smith 
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#137178 - 02/12/07 07:29 PM
Re: MPG
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Registered: 01/08/07
Posts: 6026
Loc: Des Moines ,Iowa
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sounds like i need one too
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#137179 - 02/13/07 11:22 PM
Re: MPG
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Registered: 12/17/02
Posts: 241
Loc: Rockledge, Florida
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I get bad MPG in town, although I haven't checked it closely. Most of miles are highway commuting, and the only way I can get high mileage is to drive about 5 mph slower than everyone else, stay in the right lane, and use the cruise control. That way I can maintain a constant speed while I watch everyone else bobbing, weaving, speeding up and slowing down.
We actually did an unscientific comparison a few times....people we work with would blow by us in the morning at breakneck speed...we'd stay in cruise mode. They'd be just stepping out of their cars as we pull into the parking lot.
I'd still like to get 30 MPG, just once....
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#137180 - 02/14/07 02:42 PM
Re: MPG
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Member
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Registered: 08/12/06
Posts: 464
Loc: USA
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Best I've gotten in my 3100 is 26MPG mostly interstate. Lately with all this cold weather and city driving has killed it...I got 15.8MPG at one point  . Then there's my mom's 3100. Her "bad" is 24MPG, normal is 25MPG and best I think is 34MPG. But it doesn't get up and go like my car, maybe thats why...
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#137181 - 02/14/07 02:44 PM
Re: MPG
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Member
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Registered: 04/30/06
Posts: 3201
Loc: Groton, CT
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I just filled up last night... avg'd out to 16.9 MPG. That's so bad... geez
_________________________
'97 SE with alot of mods
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#137182 - 02/17/07 07:20 PM
Re: MPG
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Member
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Registered: 12/17/02
Posts: 241
Loc: Rockledge, Florida
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I should have mentioned...I have the 3800 Series II engine in my car.
Those of you who have been posting their MPG, do you all have the 3100? Just curious.
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#137183 - 02/17/07 07:35 PM
Re: MPG
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Member
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Registered: 02/06/06
Posts: 288
Loc: PR
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15.5 This things is a HOG! 
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2001 GTP, SLP hood, SLP intake, 3" DP, 605's, 180*
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#137184 - 02/18/07 03:19 PM
Re: MPG
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Registered: 09/26/06
Posts: 691
Loc: Philadelphia, PA
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when is it time for a tune up? i have a '03 gtp with 57,000 miles. What should i replace for my tune up?
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03 GTP: 06 seats-roof rails-fbody brakes-limited edition gauges-slp spoiler-gmpp exhaust-06 vette tips-
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#137185 - 02/18/07 09:34 PM
Re: MPG
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Member
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Registered: 08/12/06
Posts: 464
Loc: USA
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Depends on the car and the plugs used. The plat or iridium plugs normally are somewhere in the 75k to 100k mile mark. Copper plugs I believe are closer to 5-10k miles mark.
For a tune up, I would...
Replace plugs and wires
replace air and fuel filters
Change transmission fluid
check brakes
flush radiator, change to green, replace thermostat.
Depends on whats been done to the car already too.
Jesse
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