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.
But the biggest reason we get good mileage is that we are all over our trucks on maintenance and repairs. Do you have any idea on the mpg loss of just having a brake pad clip not seated correctly and the pad resting on the rotor ? Or having a U-joint not fully lubed ? I don't have any idea what the MPG cost of those items are, and I never will.
Thanks for the replies! For the 4 months I've owned this truck the best I've seen is 16.5 mph average highway driving. So I would definately like to find a way to increase that just like the O.P.
I am going to tear into the front end within the next two weeks to repair a leaking inner seal and hopefully I will also find and resolve some of mpg robbing maintainance problems as I inspect the bearings, u-joints and braking system. After that I'm hoping a 4" exhaust will add a bit to increase fuel economy.
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Michael '00 7.3 4x4 eXcursion 67K Miles - 2000+ Miles on WATF
Mine since 07/02/09 at 53.5K Miles - Autometer Gauges (EGT, Trans Temp, Boost, Air Pres.) - AIS (Ford Severe Duty) - BFG AT Tires (285/75 R16 BFG AT Load range 'E') - Harpoon Mod - ITP 7.3L Fuel Tank / Pre-Pump Kit (aka Hutch Mod) - On Board Air (Extreme Aire w/ 11 Gal. Tank) - Diamond Eye 4” Turbo Back Exhaust - 6.0 Trans Cooler - 2009 Side Mirrors - Modified B Codes - 30mm Rear Sway Bar - DPTuner F5 (Stock, Hi Idle, 60 Tow, 80 Econ, 120) - 203*Therm - DIY Coolant filter - ELC Coolant - Cryo powerslots & Hawk pads all around - SS Brake lines - AIH Delete.
even 16.5 is not bad. That is why I bought a diesel. my gasser trucks got 10 to 12 at best with no where nere the towing power. And when towing 8 to 10 was doing real good. A 10 k load on my old 97 f250 w a 5.7 gas and I was standing on the pedal to try to go. I wish I got 20 mpg but w a 4x4 and towing I guess I will be hapy with 14 and rolling down the interstate at 70 with plenty of pedel to go. Since I got my first powerstroke my foot dosent get sore anymore lol
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My Current Truck:
2000 F350 XLT 7.3 Powerstroke Diesel, 4x4 longbed, extended cab, auto trans, 3:73 gears, AEM intake, summit racing 5" turbo back w/4" downpipe exhaust, Summit Racing slotted and drilled rotors and Hawk superduty pads, Contractors cap, Goodyear Wrangler Duratrac LT285-75-16 E, Black alum rims, 08 Power everything lighted heated tow mirrors, 08 door panels, 08 console and the rest is stock until I have extra cash. Next project will be fuel mods but deciding which route to go.
She Hauls a 10K dump trailer and a 7K Enclosed tool trailer.
Or having a U-joint not fully lubed
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you guys have lube able u-joints???
not mine!!!oem still
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02 7.3l psd 6 spd 4x4 cc lb srw
cut muffler
afe stage 2 pro guard 7
wicked wheel
superchips programmer
BD x-monitor
aic
pro comp 6.5 lift
35x13.5x18 mtz
kmc wheels
pro comp track bars
viair 480c compressor
5 gal. tank running 200psi
train horns
firestone bags
piaa supper white head lights
70 gallon in bed tank
warn semi hidden winch mount
warn 12,000 winch
piaa 4" smr fog lights
thats it for now but more to come
Even w/ my lift/tire set up i used to ave 18 back in TX. the cold mn weather has killed my mileage so has living in a strictly city environment and a leaking hpop. w/ that fixed i hope my mileage will improve.
Use a good flowing filter and exhaust w/ a decent tuner you should be able to get upwards of 18 or so. W/ my predator i got better mileage then w/ the ts i have now. I hope to get a dp w/ some extra timing just for unloaded driving which should help mileage.
Also, there are other small things such as a 203 stat, electric fans, smooth start, coast to stop all synthetic lube and so on that might help
Almost 16 mpg on my last fill up of 2% bio at the local farm co-op. And that is winter blend biodiesel. Combined city/rural/highway living in the snowbelt with the front hubs locked and sometimes in 4x4. Like I said I am happy with that number in a 7000lb truck.
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My Current Truck:
2000 F350 XLT 7.3 Powerstroke Diesel, 4x4 longbed, extended cab, auto trans, 3:73 gears, AEM intake, summit racing 5" turbo back w/4" downpipe exhaust, Summit Racing slotted and drilled rotors and Hawk superduty pads, Contractors cap, Goodyear Wrangler Duratrac LT285-75-16 E, Black alum rims, 08 Power everything lighted heated tow mirrors, 08 door panels, 08 console and the rest is stock until I have extra cash. Next project will be fuel mods but deciding which route to go.
She Hauls a 10K dump trailer and a 7K Enclosed tool trailer.
$hit, I would love a MPG or two.. I'm sittin about about an even 10. Definite trick is keeping it under 2k. if your flooring it, especially with a chip, you will see you gas gauge plunder.
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Sweet lookin' BLACK 02 F-350 XLT CC PSD
)], IH uppies, 07 grille & lights, dieselsite boots, autometer gauges, 6637, walker BTM, CCV Mod, Oil X over, ITP boost anialator, Foil Delete, Add a leaf HD rear springs, leveled, 285 Nitto's, 200 gal. spray tank, 8' Fisher plow winged, 2.5 yard sander.
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