Upgrades and Aftermarket - 99 & up 7.3L EngineUpgrading or adding OEM or aftermarket equipment to your 1999-Up Super Duty or Excursion with 7.3L Power Stroke diesel engine. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.
It's been years since I last visited this web site, definatly have been some big changes.
Anyway I am trying to find out whats the best way to improve mpg these days?
I have a 02 F350 Crew cab Dually with a 6spd and only average 12mpg,on a real good day I might get 14mpg but it's rare.
2006 F350 CC LWB Dually XLT Oxford white manual 4x4 6.0 PSD 6 speed. 4.10 LS front and rear, Built May05. 4" turbo back, 55 gal aux fuel tank. A real pig from a stop, give me 15' and she'll slowly come to life, then watch out!
165K miles, 12 injectors, EGR cooler, Fuel pump, 8 glow plugs, GPCM, FICM rebuilt FoMoCo engine at 150K under 7/200 warranty.
Has anyone tried to fit a new 08 Job 2 air dam to any of the older trucks, I went looking for an air dam for my '99 and only found super fancy ie expensive dress up air dam with lights? It would probably help on th 4x4.
I have an '06 F250 (4x2) and I like the idea of installing a larger air dam. Ford wouldn't have made a new air dam for the '08 so shortly after its introduction if it didn't help MPG. Take note of the GM Hybrid Yukon. GM put a fairly large air dam on that as well.
After some searching I found an air dam made by Go Industries. It is fiberglass and extends downward about 5 1/2". It does come molded for fog/driving lights but, since I dabble in bodywork and paint, closing up the holes will be a snap. I will paint the air dam in a satin black to give it an OEM look. The part # is 1138. The cost was $125. + shipping.
I haven't received it yet, hopefully in the next couple of days.
I am stuck with driving my truck to work and back every day right now. I go 120 miles round trip. I watch my boost gauge and try to keep it at 5 or under. I accelerate slow from stops and set my cruise at 65 on the freeway, even in the 75 mph zone. It pisses some people off, but I get 18 or 19 MPH consistently.
Under 2k rpm is the magic number. I have ran about 1850 for a consistent number of miles on a trip. And seen much better MPG.... though in my dually that is only about 63 mph,, and it sucks to drive that slow.
You are the MAIN factor in your MPG,, if the motor is running RIGHT,,, any money you though at it for "Gizmo's" or gee wizz stuff, won't help NEARLY as much.
Jim T.*48* SLAPS Co-Founder, 30.8 yrs RETIRED UAW 6/01/06, Now an ART (Specialists Flight Chief) with the USAFR 414th MXS Seymour Johnson AFB. My pics!'03 Dually pics!, New truck, 2011 F-350 SRW LB CC. White Platinum Lariat! 4x4
With over half a million miles on Dually Powerstrokes, I can tell you that driving habits (using cruise control, etc) are VERY important. That said, 4" exhaust, a 70hp chip and a big air cleaner put me in the17 to 19 mpg category consistently, and I put a lot of miles on my trucks. I live at 10,000' so I'm always goin' uphill, at one time or another during the day. I also pull a 12,000# 4 horse trailer w/living quarters a lot of the time. Fully loaded, I still average over 12.5 with my '02 F-350 Supercab Dually.
I'm getting ready to test one of these HHO Generators. This unit has come HIGHLY recommended by a mechanic friend of mine. At $5/Gal for diesel, gotta try stuff!
Section 2 and 3 are the meat of it. This guy is the guru of MPG driving (called “hypermiling.”) He gets 47 MPG out of an unmodded Ranger, and regularly gets 100+ out of hybrids. Most of it, I don’t have the nerve to do, but pick out what you can use and put it into action. Changing the nut behind the wheel cost very little but a change in mind-set.
Gearing is not for the financially faint of heart but it works. I re-geared my 4x2 to 3.08s. The best I’ve seen for 4x4s is 3.55. An overdrive unit is salty but gets you into the 2.98:1 range for overall ratio. By slowing down the engine you proportionally reduce the engine frictional HP. These engines have so much low end torque, the truck never notices.
A pickup truck is one of the worst shapes there is (vans and SUVs are worse). At minimum run with the gate up. A flat tonneau (hard or soft) is better and should result in a 1.5 MPG improvement. Some sort of “fastback” cover is even better.
I should have MPG figures in a week or two. I always run tests of about 1500 miles to average out my testing errors. (First tankful up a half MPG)
'00 F-350, 4x2, 6 Speed AIC 210,000 miles
Fuel tank mods: MaroonHarpoon, Pre-Pump,
Evans, 203 degree thermostat, Poor Man's Tymar, 4" Single SS Exhaust, Rugged Air Dam
225-75x16E tires in front 235-85x16Es in back, tires aired up to 100 psi, Lowered 4" in front and 6" in back, "Fastback" bed fairing
21.3 MPG before mods
27.0 MPG tested with mods
I average 11.5-12 in town hand calculated. I usually run in the 80 econo setting and drive like an old man the majority of the time. I dont know if there is something wrong with my truck or if its the 4:10 gears. I do not go over the 2k rpm mark.
My old 99.5 SRW CC 4x4 used to run TS performance in 140HP setting and race around everywhere getting avg of 14-16mpg; how does that work; cant imagine a dually with 4:10's can get that much worse mileage compared to a (srw racing around town).
however I have been told many times that 12 is about right for my truck, just find it hard to believe. I live at 6500' and have many hills, but still I have owned the 99.5 without issues. Might pull the DP tuner and compare it with stock and superchips tuner that came with the truck and see if there is a difference. One reason why i bought the truck is because the guy said he was getting 17MPG, must have been going off liometer which used to read 17, now reads 14-15 but is not accurate. anyways; would love to figure out how to get around 14-16 in town.
03 F350 7.3L Auto CC LB Dually 410's (LS Rear)
I actually just got my best mileage with my bed loaded for the past week (no suprise to me as I worked at a windtunnel)...the suprising part was even with the extra weight, the bed being filled stilled got better mileage by about .75mpg
'00 F250 7.3L, 4x4, 6-spd, SCT X3, ATTA 90 gallon tank/toolbox, Air Lift Loadlifter 5000 kit. WVO kit in the making...now if I could just finish getting the CANbus code written for that HE431VE.
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