Getting 210 miles on tank of gas....
TECH Regular
Joined: Sep 2005
Posts: 453
Likes: 0
From: 415 Northern CA
I just took my car on a hwy cruise and got 16mpg averaging 70 mph. This is with an A4, big stall and 3.73 gears. However the story changes with city driving. If I mix it up, I can squeek out maybe 14-15 mpg. My TB SS gets no better than 14 mpg on hwy.
TECH Enthusiast
Joined: Aug 2006
Posts: 623
Likes: 0
From: In your sisters panties
On The Tree
Joined: Nov 2006
Posts: 155
Likes: 1
i only read the first page and since i didnt see anyone say anything about a couple things i will. first off you have added a ported tb, aka more air in more gas used. you have a custom tune which shouldnt hurt your mileage but in your case may have, change your fuel filter, and finally what plugs did you put in? if you stuck tr55s in then you will suffer gas mileage and overall performance. if you want a better running car and better gas mileage only put ac delco double platinum plugs in. if any of this is a repeat, just disregard what i said and good luck with you mileage problems.
Okay guys, calm down, there is an EXACT way to get MPG without running your tank down, and doing some BS estimating mumbojumbo using "about how big the tanks are"
1. Fill up your tank all the way (DO NOT TOP IT OFF, LET THE NOZZLE STOP ON ITS OWN)
2. Reset the trip odometer
3. Drive around (it does not matter how much you run the tank down. 1/2 tank, 1/4 tank, doesn't matter)
4. Go back to the same gas station, same pump, and fill up again, DO NOT TOP OFF
5. Divide the miles on the trip odometer by the number of gallons it just took you to fill up (it's on the pump people)
6. This will give you your EXACT MPG. There is no other accurate way to measure MPG except this way!
There, not so hard was it? That's exact..... no "if", "ands", or "buts" about it.
By the way, I have all the mods in my sig (mostly stock), and drive around like grandma, and still get only 17MPG half highway half city.
Finally, can people please stop using "miles per tank" as a measure of fuel economy? It is utterly ridiculous and inaccurate.
1. Fill up your tank all the way (DO NOT TOP IT OFF, LET THE NOZZLE STOP ON ITS OWN)
2. Reset the trip odometer
3. Drive around (it does not matter how much you run the tank down. 1/2 tank, 1/4 tank, doesn't matter)
4. Go back to the same gas station, same pump, and fill up again, DO NOT TOP OFF
5. Divide the miles on the trip odometer by the number of gallons it just took you to fill up (it's on the pump people)
6. This will give you your EXACT MPG. There is no other accurate way to measure MPG except this way!
There, not so hard was it? That's exact..... no "if", "ands", or "buts" about it.
By the way, I have all the mods in my sig (mostly stock), and drive around like grandma, and still get only 17MPG half highway half city.
Finally, can people please stop using "miles per tank" as a measure of fuel economy? It is utterly ridiculous and inaccurate.
Last edited by Grimes; May 5, 2008 at 10:49 PM.
I'll probably get the bs flag raised on this one but I use the same method as above and my car consistently gets 18-19mpg city. I've ***** footed it 3 separate times to see how good I could get my city mileage and its consistent, each time mpg was within .2 of others. This is with majority of shifting below 2000rpms and always obeying the skip shift light going from 1st to 4th.
Not bad for a 475rwhp car
Not bad for a 475rwhp car
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
I'll probably get the bs flag raised on this one but I use the same method as above and my car consistently gets 18-19mpg city. I've ***** footed it 3 separate times to see how good I could get my city mileage and its consistent, each time mpg was within .2 of others. This is with majority of shifting below 2000rpms and always obeying the skip shift light going from 1st to 4th.
Not bad for a 475rwhp car
Not bad for a 475rwhp car
In the real world, we determine miles per tank based on how many miles you have driven from the time you last filled your tank up to the time you were required to refill the tank again. You can't seem to grasp this concept, so I will leave you to continue spreading your misinformation.
Example:
- I fill up my gas tank.
- I put 200 miles on that one fill up.
- When I go to fill up again it takes 10 gallons to fill the tank.
- I divide 200 into 10 and get 20. This is my MPG.
- My gas tank is 16.8 gallons.
- 16.8 times 20 = 336
- That is my Miles Per Tank
I just don't get how people can argue this method.
My best was 24 mpgs, all freeway. DD I average between 17-19 sepending on how many times i get a heavy foot....I'd say nothing is wrong with your car. People on here just post inflated numbers
The only thing is that your concept is broken, real world or not. Like Choco and the others said, the only way to get an accurate number to miles per tank is by finding out your MPG and then multiplying that by your tank's size.
Example:
- I fill up my gas tank.
- I put 200 miles on that one fill up.
- When I go to fill up again it takes 10 gallons to fill the tank.
- I divide 200 into 10 and get 20. This is my MPG.
- My gas tank is 16.8 gallons.
- 16.8 times 20 = 336
- That is my Miles Per Tank
I just don't get how people can argue this method.
Example:
- I fill up my gas tank.
- I put 200 miles on that one fill up.
- When I go to fill up again it takes 10 gallons to fill the tank.
- I divide 200 into 10 and get 20. This is my MPG.
- My gas tank is 16.8 gallons.
- 16.8 times 20 = 336
- That is my Miles Per Tank
I just don't get how people can argue this method.
usually when its a lil lower than 1/4 tank i'm at about 200 miles.
i just filled up
199.2 miles on the odometer
i already forgot how much gas i got but my "all around mileage" was 17
i just filled up
199.2 miles on the odometer
i already forgot how much gas i got but my "all around mileage" was 17
My car gets poor gas mileage compared to my old car, which was much more heavily modded. Heres what I saw:
1999 T/A with LS6, 224 cam, 17x11 wheels and big tires, Long tubes, 3.73's, etc. 425rwhp, consistently averaged 22-24mpg with the fill-drive-fill-devide method, and long highway trips could get up to 28mpg.
1998 formula with stock motor, LT's only, granny 16x8 wheels, and 3.23 stock A4 gears with an M6 consistently averages 16-18mpg, long highway trips get even LOWER to about 10-12mpg.
I think the difference is the old car was well tuned on a dyno and the current car is only semi-tuned, I haven't got a chance to pick up a wideband to tune the AFR correctly either.
1999 T/A with LS6, 224 cam, 17x11 wheels and big tires, Long tubes, 3.73's, etc. 425rwhp, consistently averaged 22-24mpg with the fill-drive-fill-devide method, and long highway trips could get up to 28mpg.
1998 formula with stock motor, LT's only, granny 16x8 wheels, and 3.23 stock A4 gears with an M6 consistently averages 16-18mpg, long highway trips get even LOWER to about 10-12mpg.
I think the difference is the old car was well tuned on a dyno and the current car is only semi-tuned, I haven't got a chance to pick up a wideband to tune the AFR correctly either.
