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| 1999 to 2003 7.3L Power Stroke Diesel 7.3L Power Stroke Diesel equipped Super Duty and Excursion. |
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#1
Thu, September 8th, 2011, 09:21 PM
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That makes me happy to hear! for multiple reasons, mainly because I want that kind of mileage out of my truck, but also because you enjoyed the product
 , what mpg's did you originally get?
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#2
Thu, September 8th, 2011, 11:05 PM
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Sorry to burst your bubble, but if you're looking at the overhead display, you are going to be disappointed when you figure out the mileage on paper.
Aftermarket tuning skews that reading pretty badly.
__________________
Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years. Eight 7.3L PSDs in the driveway including a 1994 Crown Vic and 1973 F100/2002 F350. Looking for the next victim.
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#3
Fri, September 9th, 2011, 02:29 AM
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agreed.. if you keep your foot out of it you can get better mileage though..
__________________
2002 7.3 F250 Supercab Shortbox DIY intake CCV dumped Autometer gauges WW/ATS 1.0 exhaust housing Hutch/Harpoon in tank mods/hpX line AIH delete/ebpv delete TruCool trans cooler Straight piped PHP FU 
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#4
Fri, September 9th, 2011, 10:21 AM
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I was using the Gryphon "EcoAvg" for comparison (the delta) to come up with ~4 mpg.
With the standard Edge Tow Safe (un-hitched) I was getting low 15's, with the Edge performance tune I was getting just under 16 (15.7 - 16.1) and the first indications with the 100hp performance I was getting 19.7. This is obviously a moving average of some kind since it is a little volatile but I thought that the delta's would be reasonably accurate. Not true Cody?
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-Kevin 2003 F250 SD Crew, 7.3L, PHP Gryphon CTS, 5.5" Fabtech Lift, 20" KMC Spy, 315/60/R20 Toyo MT, Billet Grill, ATS Ported Shroud
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#5
Fri, September 9th, 2011, 10:38 AM
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True dietoremain!
On the CTS, there's a "Mileage Coach" option to show instantaneous mpgs vs avg mpgs. I've got mine showing the difference between the two, so it was fun seeing the mileage coach go to -18 when I nailed it coming up one of the hills around here (google claims it to be a max 23% grade...little easier in the truck than on my bike..  ).
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-Kevin 2003 F250 SD Crew, 7.3L, PHP Gryphon CTS, 5.5" Fabtech Lift, 20" KMC Spy, 315/60/R20 Toyo MT, Billet Grill, ATS Ported Shroud
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#6
Fri, September 9th, 2011, 12:13 PM
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My advice is to run a few tanks through it keeping track of miles driven and gallons used. That's it.
__________________
Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years. Eight 7.3L PSDs in the driveway including a 1994 Crown Vic and 1973 F100/2002 F350. Looking for the next victim.
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#7
Thu, December 8th, 2011, 04:00 PM
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WOW
my 01 excursion has the overhead display.... tha reads mpg. well with the edge juice with attidude on drive mode the overhead display would tell me i would average 19.9 mpg. that was reset when i filled my tank and then 350 miles later. when i filled up again i did the math and i actually only got 17 mpg. so i took the whole edge juice off the truck and the over head readout is back to normal reading about 16.9mpg. this is all withthe same 350 miles i drive for work every week. i filled up and with the truck with no tuning the over head said 16.9 and my actuall calculated mpg is 16.7mpg. so in stock form its pretty accurate. I just prdered a 6 pos chip from PHP so ill put it in there and drive the same 350 miles and report back what it does to the overhead display and the actuall mpg in the 65dd and then ill do a test in the 80dd.
if you get some actuall numbers from the manual calculation way i would be curious to see how much your overhead display or gryphon thingy is off.
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