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Anyone Break the 300 Mile Tank?

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Old Dec 13, 2006 | 06:59 PM
  #76  
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From: NJ
Originally Posted by davidbuschur
Great mileage is a tune and self control away
There in lies the problem. I have no self control when it comes to boost.
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Old Dec 13, 2006 | 09:55 PM
  #77  
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From: Northglenn, CO.
Originally Posted by cij911
How are you getting almost 400 miles / tank ??? Are you monitoring your AFRs and if so, how lean are you running (cruising and at boost) ? I have heard of 300's +, but never close to 400. Congrats I guess....

I'm tuned very concervatively, under 11.5:1. I'm still running stock boost and Buschurs high flow cat. I get about 300 miles to each tank every week, that consist of 60% highway and 40% city driving. The funny thing is, I'm still running Buschurs SAFCII low settings, they seem to be working good for me at idle and on the highway. I think I could've went more then 400 miles (all highway driving) if I didn't run the air conditioning. I drive my car pretty hard so these miles are not babied.
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Old Dec 13, 2006 | 09:58 PM
  #78  
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From: tampa fl
320mi on a jestr tune...
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Old Dec 13, 2006 | 11:00 PM
  #79  
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I'm going to try and get an AMS base map tune on my stock setup. Hoping that will lean the car out a bit and optimize the timing and such. Hoping then I'll be able to break the 300 mi marker.
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Old Dec 13, 2006 | 11:55 PM
  #80  
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From: LA
I've been recording my fuel economy since the very first beginning.

Here they are:

187.4 miles
180
191.1
188.4 (I noticed the oil was low and added a full 1/4 fully synth at 3/4 tank full)
214.3

Now I have like 120 at half tank.

Car is mainly stock, i always hit the boost and 50/50 city/highway driving.

I think all these people getting 300+ miles are only achieveable if you take a long trip on the highway with no traffic WHATSOEVER.

Thanks

ps. by the way guys what is a AFC and why do you reflash your ECU? sorry I don't know too much about mechanic.
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Old Dec 14, 2006 | 06:34 AM
  #81  
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dumb dog,

I agree that 22 mpg is decent gas mileage. In a day and age though when 93-94octane fuel costs $3.00+ per gallon and we know that oil reserves are going to run out sooner or later and that some terrorist is collecting our oil money why accept 22 mpg if you can get 26 mpg or more in the same car. That's just not very intelligent thinking.

I am no saint when it comes to being "green". I don't run a cat on my EVO, shame on me. I do try to conserve everything else though, kind of a pet peeve. We don't throw ANY metal out here at the shop, it is all recycled. I attempt to tune each car I do so it will get the absolute best fuel mileage that it can. I refuse to liter, not even a small scrap of paper. We make sure non of our oil or antifreeze ever makes it into the drains and eventually ground water. I think what I "violate" by not running a cat I make up for 100 times in other areas. I'm not perfect BUT I think we should all try to save ourselves some money and the world some resources. Getting an additional 4 mpg is pretty substantial over the life of your car.

Out of curiousity I just did some math, check this out:

Drive your EVO 100,000 miles and get 22 mpg you will use 4545.45 gallons of fuel at $3 per gallon you will spend $13,636.36. WOW!

Driver your EVO 100,000 miles and get 26 mpg you will use 3846.15 gallons of fuel at $3 per gallon you will spend $11,538.46. That is 699.30 less gallons of fuel, think about that...........Plus you keep $2097.79 more dollars in your pocket.

Interesting...
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Old Dec 14, 2006 | 06:47 AM
  #82  
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Staying under 30% throttle at all times will give you the best mileage since running at 14.7:1 is where the economy is. There is very little benefit to tuning closed loop any leaner since the tradeoff is knock and other bad things.

I was averaging about 315 on a tank even on a modified car, simply put, highway driving at 60-65mph, any faster and the drag from the bodywork and spoiler would hurt fuel mileage.. Additionally wheel alignment, air pressure in your tires, size and width of your wheels, and other factors contribute.

When they switched to 10% ethanol instead of MTBE is when I saw my mileage drop down to just under 300 miles to the tank. But My driving is a combination of traffic and stop and go highway driving, I'm sure thats a major contributor to my poorer gas mileage. On my long highway only trips, I'm getting over 300 on the tank, this is with 1000cc injectors, GT35r (buschur turbo), 280 cams, etc..

My observations..

1) A catalytic converter is a legal issue, on a properly tuned and running car it does very little to reduce emissions, though it does reduce carbon monoxide somewhat. Most cars built these days are capable of regulating themselves to the point that Cats are not really necessary. But most cars do end up being neglected and therefore what makes the catalytic converter necessary. For the few hp lost with an aftermarket Cat over a test pipe, I kept mine.

2) I'd very happily give up MPG to run e85 as I'd prefer the money stay within our country if at all possible. I agree with Dave's attitude on Oil producing nations, and I do feel that many of those countries will happily take our money, and then use that money to fund efforts to damage us. Makes no sense as without our consumption of their oil, and the "Inventive" nature of americans, most of the technology required to do their business and sell their product would not exist.

3) Fuel mileage is alot like clutch/brake/tire/tranny/transfer case consumption, the people who tend to complain about poor gas mileage, seem to also complain of those other issues..
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Old Dec 14, 2006 | 07:13 AM
  #83  
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From: in denial.
Originally Posted by MalibuJack
My observations..

1) A catalytic converter is a legal issue, on a properly tuned and running car it does very little to reduce emissions, though it does reduce carbon monoxide somewhat. Most cars built these days are capable of regulating themselves to the point that Cats are not really necessary. But most cars do end up being neglected and therefore what makes the catalytic converter necessary. For the few hp lost with an aftermarket Cat over a test pipe, I kept mine.

2) I'd very happily give up MPG to run e85 as I'd prefer the money stay within our country if at all possible. I agree with Dave's attitude on Oil producing nations, and I do feel that many of those countries will happily take our money, and then use that money to fund efforts to damage us. Makes no sense as without our consumption of their oil, and the "Inventive" nature of americans, most of the technology required to do their business and sell their product would not exist.

3) Fuel mileage is alot like clutch/brake/tire/tranny/transfer case consumption, the people who tend to complain about poor gas mileage, seem to also complain of those other issues..
I don't think anyone could have put everything into reality in 3 bullets better than MJ just did here. Well said.
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Old Dec 14, 2006 | 07:17 AM
  #84  
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From: in denial.
...and for the record I have a 06 IX MR SE. When I picked up the car new (0.5 miles on it) the gas mileage was running between 250-275 per tank. Now I changed the oil at 500 miles (I do this on all my cars, I don't know why I'm just weird) and then when I hit 3,000. I've noticed in my past 2 tanks of gas my mileage has been much better as the engine has broken in and I round about 300-310 per tank with my commute from Saratoga to Albany (about an hour, 40 min highway 20 min city) to and from work every day. Bone stock btw. So far so good.
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Old Dec 14, 2006 | 07:23 AM
  #85  
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Very well put Malibu.
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Old Dec 14, 2006 | 07:23 AM
  #86  
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Whenever I hit the highway for long trips I get around 310-320, city driving which is what I do about 98% of the time I get between 240-250
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Old Dec 14, 2006 | 07:58 AM
  #87  
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Im with the few that have responded and only get something like 230 at most when the light comes on, but thats only if ive done a stint of highway driving. The tank im on now will be lucky to get to 160 to the tank. Thats on all city driving though, but other than that I have nothing to complain about!

Last edited by nk1124; Dec 14, 2006 at 08:00 AM.
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Old Dec 14, 2006 | 08:07 AM
  #88  
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Driving back from Niagara to NJ, got about 320 miles before the empty light came on.
Road trips easily get between 27-29mpg
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Old Dec 14, 2006 | 08:21 AM
  #89  
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From: in denial.
...just to touch on something. Anyone else notice the "empty" light lets you know when you have 2.5 gallons of fuel left. I find this very odd because we only have a 14 gallon (roughly) tank. So lets get this straight Mitsu you are telling us when we have approx. 18% of our total fuel left? Makes perfect sense...lol. Really though it is good because it does give you a chance to make it somewhere. When I had my Elise if the light came on and you weren't around the corner from the gas station you were in BIG trouble. (I know because I ran out of gas in it. Three times! )
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Old Dec 14, 2006 | 08:50 AM
  #90  
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hahah very rarely...250ish
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