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Old 09-13-2013, 12:40 PM   #21
darkangelism
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Thank you for the suggestions. I drive roughly 75 miles a day, 70 of those at highway speeds. Living in Iowa, typically flat road surfaces. :) and all varietys of weather conditions.

I currently drive a 2005 Ford 500 and average 28MPG. My intent was to purchase a new vechicle that could get 40+. (I realize the stated MPG for the Focus is 37.) In regards to budget, I am not so concerned about that - other than, it would not make sense to spend $500 to get a 1MPG increase. My payback is 5 years. So any modification that can pay for itsself in five years - would be considered.
I drive mostly highway, I saw the biggest increase with adding the steeda intake and my mpg was basically unchanged with exhaust and tune. K&N drop in filter and snorkel delete is probably the most cost effective mod.

Really the mods that are giving you the biggest boost are not going to be cost effective for saving money, they will gain power and mpg but the net cost over 5 years is still not going to pay for the mods, just lower the overall cost.

You are not going to cut enough weight to make a huge difference unless you want to give up comfort or safety. Pull spare tire out, used racing bucket seats, rear seat delete, pull out all carpet and floor mats, A/C delete, radio/speaker delete.
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Old 09-13-2013, 12:40 PM   #22
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Get an ultra-gauge or a scangauge. and then learn the pulse-and-glide technique. I can get 35-39mpg's at 75-80MPH! on the freeway. And that's with an 05 focus st. That's more than its 30mpg freeway rating.

You don't have to go slow to get good mileage. The point is HOW you do it.

I have a custom sri, low rolling resistance tires, and lightweight wheels. It made NO improvement to freeway mpg's when I use cruise control as compared to before those mods.
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Old 09-13-2013, 12:43 PM   #23
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Couldn't resist sharing this video on weight reduction (http://www.youtube.com/watch?v=e5lHdZ8gF6E)

YouTube Video
ERROR: If you can see this, then YouTube is down or you don't have Flash installed.
those guys are awesome
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Old 09-13-2013, 12:46 PM   #24
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I set cruse and at 70 - 80 mph get 40 - 44 mpg on all highway now below 70 it goes way up to 52.9
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Old 09-13-2013, 12:48 PM   #25
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@darkangelism

How did you like there cold air and electric turbo kit ones?
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Old 09-13-2013, 01:02 PM   #26
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...electric turbos... lol...

According to the laws of physics: an object in motion stays in motion... blah... blah... blah...

So what that means is a lighter car wont get better mpgs at a constant speed.

A lighter car will get better mpgs around town or any time you mash the loud pedal.

Better aerodynamics will help mostly on the freeway.

Mods to make the engine more efficient will help anytime.
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Old 09-13-2013, 01:10 PM   #27
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@darkangelism

How did you like there cold air and electric turbo kit ones?
Cold air one is true for Turbo and max HP, CAI benefit turbo cars when they are out of boost, low end power is improved at least on the ST. Non turbo cars CAI helps more, but they focused on turbo.

the electric turbo was funny that people actually believe that it will help their cars.

The best stuff was the fake calipers and turbo noise they added for their show car.
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Old 09-13-2013, 01:23 PM   #28
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According to the laws of physics: an object in motion stays in motion... blah... blah... blah...

So what that means is a lighter car wont get better mpgs at a constant speed.
If you take this out to the vastest degrees to be silly, then you can easily tell your theory is wrong.

I'd much rather push a 200 lb car than a 200 ton one, even once rolling, the heavier object increases the friction levels made by rubber tires.

Therefor, a lighter car WILL get better MPG, though it will be effected by air drag more than a heavier one. So at moderate speeds, lighter cars reign supreme.
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Old 09-13-2013, 04:26 PM   #29
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If you go into extremes, yes, the many different variables come into play. But even the couple hundred pounds you could remove from a normal car will hardly affect the outcome at constant speeds. Once rolling, a heavy sedan is just as easy to keep pushing as a lighter coupe, for example.

But if you need to maintain a constant speed up a hill, you need to accelerate against gravity. So that's when weight comes into play. When accelerating.

Level ground at constant speeds, weight differences will hardly affect your mpg's. Unless your focus weighs 200 tons...
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Old 09-13-2013, 06:03 PM   #30
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I set cruse and at 70 - 80 mph get 40 - 44 mpg on all highway now below 70 it goes way up to 52.9
You say "now", so what did you do?
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