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  #16  
Old 07-14-2010, 07:53 PM
chazzone chazzone is offline
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Default Re: anyone have any luck with a mod for mpg

I'm kind of perplexed on this mileage thing, too.

I have an '89 BII w/ 5" of lift, 29" tires, heavier front and rear axle, carry a bunch of tools, along with towing a reasonably sized trailer, and I average 19-20 mpg.

I use motorcraft plugs, NAPA Gold air filter, intact exhaust, no modified airbox or throttle cable...

I also use synthetic oil and lubes.

I'd say that you need to do a thorough tune-up. Your truck must be having serous issues if that's all the mileage you're getting.

Make it run right before you go looking for mods.
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  #17  
Old 07-14-2010, 08:04 PM
Jp7 Jp7 is offline
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Default Re: anyone have any luck with a mod for mpg

Quote:
Originally Posted by hpfreak08 View Post
maybe change the rear o2 sensors.. they control your fuel trim..but them things are expensive..
No they don't - the front ones do.

Why would he not just view the trims and make sure they aren't overly positive with obd2 access?

Also - If the fuel trims are overly richened it will shift the long term map and throw a rich code.
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  #18  
Old 07-14-2010, 08:07 PM
Jp7 Jp7 is offline
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Default Re: anyone have any luck with a mod for mpg

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Originally Posted by FireRanger View Post
Other than regular required maintenence, there is NOTHING you can buy, add, modify, program, or pour that will increase MPG to the point of saving money!! All the little add-ons and programers and changes cost about 100x more than the money you will save by adding 1mpg to your average. If your goal is MPG and not looks/sounds/speed/etc, then do not waste your money.

The ONLY thing outside regular maintenece that will help your MPG and not cost more than you save is a lighter right foot. End of story. Accelerate gentler, keep it under 70 on the highway, plan you stops and speed reductions to maximize coasting and minimize breaking. Cruise control helps a lot with this if you have it.

And in the end, remember you have a pickup truck, not a honda civic so there is only so much room for improvement.
Changing timing is free (if you have software like I do though) - you just need to make sure that it isn't aggressively advanced. This is really the only "good" way to gain mpg (which is still pretty minor)
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  #19  
Old 07-15-2010, 06:31 AM
KOMPRESSOR KOMPRESSOR is offline
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Question Re: anyone have any luck with a mod for mpg

Quote:
Originally Posted by fireranger View Post
other than regular required maintenence, there is nothing you can buy, add, modify, program, or pour that will increase mpg to the point of saving money!! all the little add-ons and programers and changes cost about 100x more than the money you will save by adding 1mpg to your average. If your goal is mpg and not looks/sounds/speed/etc, then do not waste your money.

The only thing outside regular maintenece that will help your mpg and not cost more than you save is a lighter right foot. End of story. Accelerate gentler, keep it under 70 on the highway, plan you stops and speed reductions to maximize coasting and minimize breaking. Cruise control helps a lot with this if you have it.

And in the end, remember you have a pickup truck, not a honda civic so there is only so much room for improvement.

ok, so. With all this,i can believe that a supechips and a k&n will not aid with mpg, but does it'll give me more hp, even if is just a little??
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  #20  
Old 07-15-2010, 06:42 AM
chazzone chazzone is offline
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Default Re: anyone have any luck with a mod for mpg

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Originally Posted by KOMPRESSOR View Post
ok, so. With all this,i can believe that a supechips and a k&n will not aid with mpg, but does it'll give me more hp, even if is just a little??
Superchip will only decrease the mileage of your vehicle.

It might add a few ponies at the top end, but you'll never feel it unless you convince yourself that you do.

Put the money into a good tune up with Motorcraft parts (plugs gapped properly), and some AMSOIL lubes, and you're going to be about as good as you can get.
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  #21  
Old 07-15-2010, 08:24 AM
meteck meteck is offline
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Default Re: anyone have any luck with a mod for mpg

I gotta tell you, this thing is a gas hog! I've got friends with full size, v8 PU's that get better MPG than I do. It's an 03 Edge and the MPG has remained constant since it was new. 20 on the hwy with cruise under 70 mph. Much less in town. Had a Cherokee with 4.0 that did better than that and had 40 hp more.
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  #22  
Old 07-15-2010, 10:06 AM
Jp7 Jp7 is offline
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Default Re: anyone have any luck with a mod for mpg

Quote:
Originally Posted by KOMPRESSOR View Post
ok, so. With all this,i can believe that a supechips and a k&n will not aid with mpg, but does it'll give me more hp, even if is just a little??
a big oversized cone filter will help say, if you significantly increased the output of the engine:

Huge Cams, Expansive port/head job, Stroked bottom end, Forged parts.

This would make the engine capable of moving more air, and the filter might be a restriction then.
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  #23  
Old 07-15-2010, 10:08 AM
Jp7 Jp7 is offline
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Default Re: anyone have any luck with a mod for mpg

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Originally Posted by chazzone View Post
Superchip will only decrease the mileage of your vehicle.
Wrong

Adding timing to the point where it does not detrimentally effect the engine will help as long as you are not past MBT. Knock and detonation will break things fast so you have to be careful.

It will increase mileage and increase performance. It will also reduce emissions.

I add gulps of timing for e85 to the point that I can actually pass MBT without making any noise. This does nothing but pushes out parts. This is why you have to measure for MBT on a dyno and regress a bit (only with alcohol though)

Last edited by Jp7; 07-15-2010 at 10:27 AM.
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  #24  
Old 07-15-2010, 03:07 PM
FireRanger FireRanger is offline
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Default Re: anyone have any luck with a mod for mpg

Sure you can make an improvement in MPG with chips and programmers. That was my whole point earlier in this thread. It's a completely useless gain in MPG. Congradulations, you've added 1mpg and it cost you several hundred dollars, completely negating you 1mpg gain in economy.
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  #25  
Old 07-15-2010, 04:34 PM
Jp7 Jp7 is offline
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Default Re: anyone have any luck with a mod for mpg

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Originally Posted by FireRanger View Post
Sure you can make an improvement in MPG with chips and programmers. That was my whole point earlier in this thread. It's a completely useless gain in MPG. Congradulations, you've added 1mpg and it cost you several hundred dollars, completely negating you 1mpg gain in economy.
Oh, I don't think it would even be 1mpg. A half would be a huge gain.

Don't forget that just because there is no open source (free) software to tune a ranger that does not mean that other cars can't be tuned for free. There is plenty of open source software to tune vehicles, just nothing that I've come across for our trucks (not that I would adjust mine anyways)
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  #26  
Old 07-16-2010, 06:33 AM
KOMPRESSOR KOMPRESSOR is offline
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Exclamation Re: anyone have any luck with a mod for mpg

Quote:
Originally Posted by jp7 View Post
wrong

adding timing to the point where it does not detrimentally effect the engine will help as long as you are not past mbt. Knock and detonation will break things fast so you have to be careful.

It will increase mileage and increase performance. It will also reduce emissions.

I add gulps of timing for e85 to the point that i can actually pass mbt without making any noise. This does nothing but pushes out parts. This is why you have to measure for mbt on a dyno and regress a bit (only with alcohol though)
i'm sorry but, what is "mbt"??
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  #27  
Old 07-16-2010, 10:42 AM
Jp7 Jp7 is offline
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Default Re: anyone have any luck with a mod for mpg

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Originally Posted by KOMPRESSOR View Post
i'm sorry but, what is "mbt"??
max brake torque
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  #28  
Old 07-16-2010, 11:02 AM
hpfreak08 hpfreak08 is offline
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Default Re: anyone have any luck with a mod for mpg

i thought the rear ones controlled long term fuel trim like on trips. cuz i took mine out and made an adjustable simulator and it was a difference in milage.. but idk too much about this.. so you may be right..
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  #29  
Old 07-16-2010, 11:43 AM
Jp7 Jp7 is offline
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Default Re: anyone have any luck with a mod for mpg

Quote:
i thought the rear ones controlled long term fuel trim like on trips.
Okay I totally don't mean to be mean here but I just so laughed out loud. The fuel trims (ltft and stft) are used whenever your running in closed loop.

The stft's switch around zero (normally) this shows the ecu adjusting back and forth back and forth so that it stays stoich. When something goes wrong (lets pretend you have a spark problem and are not getting spark) and the system runs rich (just for example) the sensors feed this back to the computer and it knows "hey - I'm too rich". The stft's don't switch around zero, they go negative "hey I need to remove fuel - says the computer. This then goes into the ltft's, (it would go negative in my example) so that the stft's can then switch around zero again.

Quote:
cuz i took mine out and made an adjustable simulator and it was a difference in milage.. but idk too much about this.. so you may be right..
If you lie to your ecu and tell it the mixture is not what it is sure you can use less fuel, but it will run lean (hot). When was the last time you pulled the pistons out and look at your rings?
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  #30  
Old 07-16-2010, 02:07 PM
vapiper vapiper is offline
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Default Re: anyone have any luck with a mod for mpg

I did the M109R mod

get around 35-40 mpg
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