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Best ways to improve MPGs.

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Old 11-03-2010, 06:05 AM
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I would have to say change you gear ratio. Was thinking abou doing that to mine. I get 14 to 16 no matter how I drive, so who knows if that would work. Mite not for the 4.9
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Old 11-03-2010, 11:52 AM
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Hey guys. been lurking around the forum for a bit. Theres months of reading on our GEN of trucks. I have a 94 f-150 reg cab slong box with 4x4 and the 300 I6 and a 5-speed it gets great mileage as far as i can tell. I havent calculated it yet. but for example it gets way better than my old 2.8L s-10, which isnt quite a good example (highly modified)
My f150 has 285,000 km and it doesnt make any bad engine sounds and doesnt smoke at all ever. It sounds like it has 3 kms on it. i throw 10$ in and i can drive it to work all week and do some errands once and a while.
I will calculate it one day for everyone.

I think the guys are right, spark that doesnt ignite fuel is like a hole in your gas tank. a basic or advanced tune up and codes read and fixed if needed will help alot on any engine. Tire pressure is a major one, and im pretty sure a tailgate net or a tonneau cover makes a big diff.

Also i think the gears are also a good and cheaper place to look too. I cant stay in 4th on the highway, its revving like 3250 rpm so i think i have a different gear ratio than some on the forum. So i can use all 5 gear effectively. Anyway keep it up guys and thanks for the cool forum.
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Old 11-03-2010, 09:46 PM
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Originally Posted by Pine Barron View Post
By the way, I'm aiming to get 18mpgs out of my straight six. Not there yet but I'm getting closer.
I already have gotten 18 once or twice, back when I still had 235/75s. Got 31s now and pull in 15-17, normally 17, but if I wanna go anywhere kinda quick, it drops. 3.08 gears do great for gas. But I want 3.55/3.73/4.10, anyone wanna trade axles? Mine's 3.08LS
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Old 11-03-2010, 09:53 PM
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Originally Posted by abycat View Post
Hey guys. been lurking around the forum for a bit. Theres months of reading on our GEN of trucks. I have a 94 f-150 reg cab slong box with 4x4 and the 300 I6 and a 5-speed it gets great mileage as far as i can tell. I havent calculated it yet. but for example it gets way better than my old 2.8L s-10, which isnt quite a good example (highly modified)
My f150 has 285,000 km and it doesnt make any bad engine sounds and doesnt smoke at all ever. It sounds like it has 3 kms on it. i throw 10$ in and i can drive it to work all week and do some errands once and a while.
I will calculate it one day for everyone.

I think the guys are right, spark that doesnt ignite fuel is like a hole in your gas tank. a basic or advanced tune up and codes read and fixed if needed will help alot on any engine. Tire pressure is a major one, and im pretty sure a tailgate net or a tonneau cover makes a big diff.

Also i think the gears are also a good and cheaper place to look too. I cant stay in 4th on the highway, its revving like 3250 rpm so i think i have a different gear ratio than some on the forum. So i can use all 5 gear effectively. Anyway keep it up guys and thanks for the cool forum.
Since when have gears been "cheaper"? Cheaper than what, an engine swap? I agree that the right gears can help (they did on my 302) but they were by far the most expensive modification I've done, even including all the suspension work.

Just sayin'.
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Old 11-03-2010, 10:27 PM
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Originally Posted by zchpro View Post
^^^
straight piping kills your torque
more so than anything else



no it dont, someone been teaching you the wronge stuff, these trucks dont need that much back pressure so straight pipe with highflow cats is fine, if your so concern bout it just straight pipe it and messure the back pressure and compair it to oem specs.
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Old 11-04-2010, 12:02 AM
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Originally Posted by mustangGT90210 View Post
I already have gotten 18 once or twice, back when I still had 235/75s. Got 31s now and pull in 15-17, normally 17, but if I wanna go anywhere kinda quick, it drops. 3.08 gears do great for gas. But I want 3.55/3.73/4.10, anyone wanna trade axles? Mine's 3.08LS
You already know my 3.55s are available, but it's just the gears. Just let me know...
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Old 11-04-2010, 12:11 AM
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Originally Posted by heathmeador View Post
no it dont, someone been teaching you the wronge stuff, these trucks dont need that much back pressure so straight pipe with highflow cats is fine, if your so concern bout it just straight pipe it and messure the back pressure and compair it to oem specs.
From what I've understood the more flow, the better the high end horsepower but complete loss of low end torque. There was a thread about duals saying to add the X (or is it Y) pipe rather than the H because it creates more pressure for torque

http://www.fullsizechevy.com/archive.../t-303516.html

Never heard what you're saying about straight piping. Can anyone else chime in and clear this up.

Sorry for thread jacking i'm just curious now
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Old 11-05-2010, 11:27 PM
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[quote=zchpro;639905]From what I've understood the more flow, the better the high end horsepower but complete loss of low end torque. There was a thread about duals saying to add the X (or is it Y) pipe rather than the H because it creates more pressure for torque

http://www.fullsizechevy.com/archive.../t-303516.html

Never heard what you're saying about straight piping. Can anyone else chime in and clear this up.

Sorry for thread jacking i'm just curious now



straight pipe will increase the flow but as long as u dont like run open headers and u still have all the bens in the pipe when it goes over the rear end and stuff youll be fine with back pressure and wont kill your torque, (striaght true duals is what i run on my 5.4) wich a striaght 6 has plenty of torque cuase longer the crank the more natrual torque it will have. Thats why u see all these striaghts 6's out pull v8's.

Y pipe is singal to dual or dual to singal. X is where the pipes cross in a x. With this straight 6 he has he can only do singal to dual which is what i would do. and u really dont see any improvment in performace with the x pipe on V engines.
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Old 11-06-2010, 10:39 AM
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Originally Posted by Kubb 147 View Post
What coil upgrade is there? Where do I get one?
The best bang for your buck & only one I know of, that increases performance & MPG's at the same time. Ignition system upgrade w/ base timing bump (don't skimp on wire quality. You will regret it. MSD Superconductors 8.5's/Taylor Thunderbolts 8.3's/Ford Racing 9's) And stay away from Double Platinum Plugs, especially Bosche! http://fullsizebronco.com/forum/show...ht=timing+bump

Last edited by ymeski56; 11-06-2010 at 10:47 AM.
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Old 11-06-2010, 12:29 PM
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Originally Posted by ymeski56 View Post
And stay away from Double Platinum Plugs, especially Bosche!
Is this just because you can't gap them? Is this only relevant when you are running a significant timing advance? I'm interested in a few more details. I typically run single platinums and have considered doubles, so I'm curious.
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