i need to increse my mpgs im getting about 13 on the highway and i have a 40 mile comute to work and 40 back so i need to do something diesel prices are on the rise so does anybody have ideas and i dont really have the money to put in to a programer right now

 

Well, Hi! My Oklahoman Brother. I used to work For Matrix when I lived over there. I need some info on your truck? Like Is it a m/t or an Auto? The next thing is, what your cab configuration? Is it a 4x4? Did you have some decent MPGs before you replaced the Cam Position sensor through Ford, when they did their recall? What size tires are you running? and are you prepared to change your driving habits? Let us know and we will steer you in the right direction. you can track your progress through this site Fuelly.com


This is my average city driving MPG

 

it is a 4 door 2wd dually auto i dont know if the cps was replaced when they had the recall i have had the truck for 2 years and havent seen a change in mpg at all and im running stock tires

 

My 1999 F-250 7.3 SUPER-CAB, LONG-BED was giving me 15.5 in the city

 

Ok some weight issues but no problem there. You being a dually might have some issues, but not much. Automatic transmission? Look in the front of your power-plant if you need some resources go to this site guzzle's 2002 Ford Powerstroke Diesel CPS R&R Changeout If your CPS is Grey it is giving you some problems. If its black you might want to take a look at it, and see if the o-ring on that position sensor is a bluish purple. If it is either of those go to 1825899C93 International "Black" CPS - Original this should help a bit. The next thing is to prepare for intake and exhaust system, and tuning I prefer SCT, but you can decide for your self. You really don't need to do much. just try a different driving style don't lay into it. If your at a known light that is red for over 10 seconds shut the truck down (only if you have a manual) Cost down the hill, etc google Hypermiling. Now if you need more info? Try ecomodder you might not wasn't to go the extremes these guys are doing, but you will have a better understanding in your quests for more MPG

 

Your driving a truck that weighs about 8500#, it has the aerodynamics of a brick...

About the best you can do is drive it like there is an egg under your foot, keep the RPM's below 2k when ever possible.

Changing the CPS will NOT gain you anything. There is some Perceived issue with the Gray CPS, I have not seen anything worth while that shows it.

Rustin, Why do you prefer SCT? You do understand you can access more parts of the PCM's programing with a chip right?

There is NO reason to use a flash tuner on a 7.3...

 

i dont drive it hard i hardly ever really get in to it i useually keep it about 2k rpm but it still dont help

 

Thats about all you can do, check the up pipes for leaks, get some gauges in there to see what your boost and EGT's are doing...

But the best I would expect any Dually to get is about 15mpg... Its heavy, its wide and its got alot of ground contact.

Check the air pressure of your tires, go to MAX rating of the tire and that will help as well.

 

No problems with that quote.

Changing your driving style will help, I did leave a link.

[quote=CSIPSD;730859]Changing the CPS will NOT gain you anything. There is some Perceived issue with the Gray CPS, I have not seen anything worth while that shows it.

Here is where we have a difference of opinion. With all due respect to Joe (CSIPSD). He knows his PowerStroke, and has yet to say anything wrong. I did the grey CPS after the Recall. I thought nothing of it. For about 6 months I had issues of fuel economy, and false injector codes. I have been on many forums complaining of this issue. One member on another forum sent me to Clay over at Riff Raff. I bought the black CPS he sells. Replaced the grey one and put it in the glove box. The truck ran like it was supposed to. Starting was not so hard, and my fuel economy went to normal. I will say this not everybody has had this experience, a small minority did not experience any change in the behavior of their Power-plants

With all due respect again to you Joe. In my opinion, I really don't think you can access the full spectrum of the PCM with a chip. In my experience many of the owners, that have had a chip installed, Loved their chips. Some have seen problems with the chip from prolonged use. I like flash tuning, albeit a full custom flash tune, not some buy it try it basic flash tune. SCT works rather well with Fords, like EFI Live on a GM product. Chips to me (and this is fully my opinion), Are out of date technology. Granted they are better then they have ever been since they came out in the late 80's. If I go to any serious hot rod shop that uses Electronic controlled fuel injection systems on their creations. They use a full out custom flash tunes.

Just a difference of opinion Joe. What you, and I do might not work for everybody.

 

well if they ever come out with a tuner like EFI live for a 7.3 i will buy one, untill then i will stick with a chip like the people who know what they are doing are using.