Compression Ignition Addict
Join Date: Jul 2007
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I get my best economy running the newer eco tune, though I don't really see much difference with looney if I keep my foot out of it. How fast do you drive? Do you have a 4.10 rear end? I usually see 16s if I run in the 80s. I have a 3.73 rear end. If I run 72-73, I usually get high 19s to low 20 MPG range. If you keep it below 2000 RPM, you will get the best economy. With a 4.10 rear end, that equates to about 65. My best trip economy was 20.5 over the whole trip running dead flat I-10 in Texas.
I just took a trip to Florida from Kentucky with 3 people, a dog, a camper top, and a bed full of crap. I'd say there was at least 800 pounds in the bed, and I got 19.2 from start to finish over 900 miles, with 300 or so of that in mountains. On the way back, I had the same load plus a 6000 pound trailer. I got 15.7 then.
2006 F-250 Powerstroke Crew Cab Lariat Long Bed 4x4 FX4
SCT Xcal2 with Xtreme tunes by Innovative
Banks Monster Exhaust/Quadzilla Commander
ARP Head Studs and Elite Sneaky Pipe (Thanks Scuffy)