12 around town, but some reason the car always wants to go fast. 
Mpg
Drifting
Joined: Jul 2003
Posts: 1,796
Likes: 1
From: Annandale VA
Originally Posted by HHC5
Has anyone calculated the mileage to check the "DIC"
Drifting
Joined: Feb 2004
Posts: 1,927
Likes: 9
From: Ozark, Alabama
Originally Posted by VetteDrmr
If you're running an automatic tranny, then you've got the cruising 2.73 gear ratio in the diff. If a M6, then you know what you've got! 
And, yes, I run premium. You can run lower octanes, the PCM will reduce the ignition timing whenever it detects detonation, but then the power (and mileage) goes down. And, with the difference in prices running 4-6% difference between grades, you'll quickly eat up any savings in poorer mileage.
HTH, and have a good one,
Mike
And, yes, I run premium. You can run lower octanes, the PCM will reduce the ignition timing whenever it detects detonation, but then the power (and mileage) goes down. And, with the difference in prices running 4-6% difference between grades, you'll quickly eat up any savings in poorer mileage.
HTH, and have a good one,
Mike
I get just the opposite result. Better mileage with 87 than with 91 in my 04 coupe.
BTW: more energy in the 87 than in the higher blends. The only minor difference in acceleration which I doubt we as humans could detect without electronic equipment.
Premium fuel is an emotional issue for the driver .... not the machine, unless it is moded or a Z.... Sort of like a MN6 v. A4
Last edited by rbl; Sep 2, 2004 at 08:12 AM.
Racer
Joined: Dec 2003
Posts: 368
Likes: 0
From: Atlanta Georgia
St. Jude Donor '03-'04-'05
Highest I have seen is around 34 on the open road...isn't it great to be able to cruise at 80+ MPH and still get over 30 MPG
Wonder how many Viper owners can say that?
NONE
Around town I average 21/22 and that's in this &*^%$# Atlanta Traffic
Wonder how many Viper owners can say that?
NONE
Around town I average 21/22 and that's in this &*^%$# Atlanta Traffic
Racer
Joined: Oct 2001
Posts: 385
Likes: 3
From: Lincoln CA
Originally Posted by MrLeadFoot
Now, we're talking. I wonder if my mileage is so low due to the crappy gas here in CA. I know someone said octane makes no difference, but I notice that most of you who are getting much better mileage are from somewhere else (a downhill run from Tahoe to San Jose doesn't count, no offense). Hmmmm... is it time to move? Lord knows we have way too much equity in our homes here...hmmm... better gas, less problems, lower expenses...hmmm... his and her vettes...hmmm....
Either way, I try to buy nothing but 76 to keep the MTBE out of my cars and out of the air/water.
As for the DIC, I find it very close to accurate. I reset the average mpg and my trip odometer everytime I fill up. I'm withen 1 mpg if not in the tenths of a gallon when I figure out miles divided by gallons on my cell phone...
Le Mans Master
Joined: May 2004
Posts: 7,825
Likes: 0
From: Manassas VA
I get between 28 and 33 mpg on road trips. 30 to 35 mpg on highway cruising at 75 to 80 mph. 6th gear drops the tach to around 1.5k rpm.
Local driving drops to anywhere between 22 and 25 mpg.
Sometimes, after filling up, I have to get up to speed (65-70 mph) and watch the "range" numbers go up. Gotten from 425 miles (per tank) to 615 miles. Normally, on highway driving, half tank measured on the analog guage shows a little better than 300 miles (range) to the remainder of the tank. I also noticed how it doesn't "drop" from 130 miles to "empty" during highway driving.
Local driving drops to anywhere between 22 and 25 mpg.
Sometimes, after filling up, I have to get up to speed (65-70 mph) and watch the "range" numbers go up. Gotten from 425 miles (per tank) to 615 miles. Normally, on highway driving, half tank measured on the analog guage shows a little better than 300 miles (range) to the remainder of the tank. I also noticed how it doesn't "drop" from 130 miles to "empty" during highway driving.
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Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Originally Posted by HHC5
Has anyone calculated the mileage to check the "DIC"
Robert
Pro
Joined: Mar 2003
Posts: 564
Likes: 1
From: Tampa FL
Originally Posted by LoneStarFRC
Yup. Been doing it for years now. DIC is ALWAYS higher than actual mileage. Each and every time! The only difference is by how much. In my experience it varies from approx. 5% to 10%, and as I said, it's higher than actual. My actual mileage in town is 19 to 20. DIC mileage shows 21 to 22.5 range. The numbers vary a little from tank to tank but suffice to say an 8% error would be about average. HTH
Robert
Robert
My DIC tends to be about 10% on the optimistic side. There was a long thread on this topic a few months back. I have shown anywhere from 14mpg to 36mpg depending on my Cars "Mood". 
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Originally Posted by DanielW
I usually average 10-13mpg city/highway combined.
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
Likes: 38
From: King George VA
I average 5.4 mpg, so all of you guys should be plenty satisfied with your mileage. And given that I am paying something like $4.75 a gallon for 100 octane race fuel, 5.4 mpg really hurts. 
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