Improving MPG with upgrades? - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 12 (permalink) Old 11-02-2007, 08:03 PM Thread Starter
 
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Improving MPG with upgrades?

Hello all,
I've been drinving a 2002 F250, 7.3 for 3 years now with absolutely no problems other than my MPG getting lower since I've retired in the great Pacific Northwest. I've upgraded to the AFE Stage2 intake, Edge Attitude and 4" exhaust bt have nominal payback in the last year. I'm averaging about 17 mpg. I am very anal with maintenance and my local dealer inspects it every 3,000 for oil changes so I know it's in good shape. Yes, I could do my own oil changes but I have agreat program where my oil changes cost me only $10.00 EVERY TIME! That's right....$10.00!:nana
I've researched and kicked around the idea of adding a WVO system to run veggie oil instead of diesel at $3.80 per gallon.
I'm curious about the propane injection system as well as an air/fuel seperation system. Now, my rig is a daily driver as well as used on my developing retirement property so I'm not trying to build big horse power and moster trucks like most I see on these forums. I want to focus on MPG and not lose performance.
Does anyone have any personal experience with the propane injection or air/fuel seperation either pro or con?
Let me also state that I'm not a diesel mechanic or junkee and if you start throwing around a bunch of acronyms, I'll have absolutely no idea what you're talking about. I'm in the learning stages and am a hands-on learner.
Also, any information or education chips would be nice too. As I stated, I installed the Edge Attitude with no real increase noticed. Is there an additional chip to "stack" on it or is everything build in?
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post #2 of 12 (permalink) Old 11-02-2007, 08:44 PM
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Forget stacking chips.

Get Jody @ DP-Tuner to tune you an econo flash in the PCM.

Stick a tonneau cover on it.

ITP's regulated return for the fuel system may make a slight difference, but you'll not get near the ROI as you will with the economy flash from Jody. Mine paid for itself in less than a year.

Besides, if you get a chip, you'll forget all about economy; fancy yourself a shade-tree diesel mechanic; lose the "I'm not a junkee" status and start with the serious $$$ mod disease already affecting most of us It's the Ford diesel version of PMS - Powerstroke Modification Syndrome. It starts with posts like, "Improving MPG with upgrades?" :

I'm averaging 20.4 ytd in my truck with a high of 23.4 mpg. I have a set of single shot injectors to put in, but I think my heavy right foot will lose all sense of self-discipline as well as ruin my transmission if I go there.

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post #3 of 12 (permalink) Old 11-02-2007, 09:54 PM Thread Starter
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Thanks for the feedback. Now I'll continue to look for further education with what may appear to be dumb questions to the diesel experts.

I visited the DP tuner link you provided which now creates more questions.

1. It appears as though there's the option to replace the factory unit or have it reconfigured. Is that correct?

2. The edge allows me to view EGT, RPM, Boost, etc. Will the DP allow the same? What does it provide over the edge?

3. You didn't mention anything about propane injection. Any feedback on that?

I was averaging 24-25 when i was active duty and stationed down south. It's amazing what temp and elevation does to mpg.

Thanks again. More questions later
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post #4 of 12 (permalink) Old 11-03-2007, 04:03 AM
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Quote:
Originally Posted by 02Lariat
Thanks for the feedback. Now I'll continue to look for further education with what may appear to be dumb questions to the diesel experts.

I visited the DP tuner link you provided which now creates more questions.

1. It appears as though there's the option to replace the factory unit or have it reconfigured. Is that correct? You can have either accomplished. See below . . .

2. The edge allows me to view EGT, RPM, Boost, etc. Will the DP allow the same? What does it provide over the edge? Call or e-mail DP-Tuner to see if they can/will program the Edge with his 80econo program. I can see the RPM by looking at my tach; my EGT & Boost by looking at my gauges. Never even seen what you have which is why I refer you to the experts in tuning.

3. You didn't mention anything about propane injection. Any feedback on that? Can't really see it being worth the operational expense and it's addicting because of the extra hp added. You'll need custom programming because of the timing issues associated with using propane as well.

I was averaging 24-25 when i was active duty and stationed down south. It's amazing what temp and elevation does to mpg. Show me a spreadsheet where that was hand calculated, please . . . and fill out your sig to give us a better idea about your truck. 2wd? Regular cab? Manual or Auto?

Only person I've heard of with those numbers is Dave Witmer after lowering, building a custom funky lookin' clamshell tonneau, and airing his tires up rock solid.


Thanks again. More questions later
Keep asking the questions and browse around the old posts.

prt

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post #5 of 12 (permalink) Old 11-03-2007, 05:11 PM
 
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You also have to consider the amount paid for items versus how much more mpg you obtain. It takes a very long time to recoup the cost of a chip, exhaust, intake, with money saved with fuel. With that being said I think the best option is a light right foot, anticipating red-lights (coasting to them instead of driving to them and then stopping faster)and slow, anger generating, take-offs.

With those 10 dollar oil changes you're already getting a free half tank of fuel, every 5k miles.
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post #6 of 12 (permalink) Old 11-09-2007, 03:35 AM Thread Starter
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Thanks for all the feedback everyone. Sorry to respond earlier but I'm out of town for a week each month and I just got back today.

I10HaulR: I have a very light foot, anticipate stops as much as possible. From your name I assume you're a car hauler on interstae 10. What part? I'm originally from N.O LA and traveled I10 a lot.

plainredtruck: I'll be contacting Dp tomorrow and am not considering propane any more. I don't need any more power and it looks as though the mpg won't be worth it. I can't give you a spreadsheet on elevation but can only speak form experience. I can vouch for gas and diesel mpg being better in lower elevation though. I'll have to figure out how to fill out the "sig" to provide more info on my truck foe everyone too. I'm a little computer illiterate on those matters. I do however drive a 250 Super Cab (4-door) 4X4 automatic with and external 30 gal tank that does create extra weight. I'm not crazy about the tonneau cover though because it creates and issue with hauling things in the bed. I also saw and issue (if you can believe this) on mythbusters that supposedly proved that tonneau cover don't increase gas mileage. Also, (without reference....sorry) remember an article on the Nascar truck racing series several years back about it. They (Nascar) don't run their trucks with covers because ot the same reason.

What about veg oil? Anyone have any feedback on that? Other than trying to locate restaurants to provide free oil I can't see any down points.

Maybe I'm getting the best mpg I can for my money now but it sure would be nice to improve it even more.

Thanks again for the feedback guys.
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post #7 of 12 (permalink) Old 11-09-2007, 03:42 AM
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Do you use any fuel additives I put 2stroke oil in mine and went from 16 to 17 in the city

2005 2500HD DIRTYMAX 6in lift, dual exhaust, afe airbox. Tuner soon to come

2001 PSD shortbed crewcab, ATS tranny edge juice w/attitude, Superchips programmer, Gauges, exhaust, 4inch lift w/35s, (SOLD)

Originally Posted by sledneck57
Your sweating like a queer holding a hot dog.lol.
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post #8 of 12 (permalink) Old 11-09-2007, 03:43 AM
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Also what do you have you attitude set on? If I run mine on the mpg setting i get worse than if I run it extreme

2005 2500HD DIRTYMAX 6in lift, dual exhaust, afe airbox. Tuner soon to come

2001 PSD shortbed crewcab, ATS tranny edge juice w/attitude, Superchips programmer, Gauges, exhaust, 4inch lift w/35s, (SOLD)

Originally Posted by sledneck57
Your sweating like a queer holding a hot dog.lol.
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post #9 of 12 (permalink) Old 11-09-2007, 03:44 AM
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You should consider yourself luck to be getting 17! I'm barely cracking 15.1 with a bucket of supposed "MPG increasing modifications" (203 degree thermostat, free flowing exhaust and intake, synthetic oils, etc - see my sig). If diesel gets any higher out here in NorCal, where it's threatening 3.70 a gallon, I'm going to have to buy a commuter car and park ol' Betty.

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post #10 of 12 (permalink) Old 11-09-2007, 03:53 AM
 
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Quote:
I10HaulR: I have a very light foot, anticipate stops as much as possible. From your name I assume you're a car hauler on interstae 10. What part? I'm originally from N.O LA and traveled I10 a lot.
I live in Houston, but at the time I signed on I had a somewhat dedicated run from Houston to Houma La. Seemed like I was on I10 ALL the time. But I pull a 40ft goose neck flat bed.
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