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Old 04-21-2013, 11:49 AM
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Fuel mileage.

Hello all,

I'm new here my name is Eric. I just bought my 2003 f250 7.3l. here 2 months ago. I have been asking around about fuel mileage and it seems that I'm not getting what I'm supposed to. Back round info: 166k miles. Intake, exhaust and edge hand held programmer. Before programmer 12.6mpg after 13.2. This is in economy mode. When I pull my boat it is about 10-11mpg. Boat weighs 7lbs. Tires are 285/75/16. I'm not sure what the issue is if any. I've been hearing of people getting 17-20 mpg. I am not see which rear end in is the truck. If it was a 4.10 would it hurt it that much? I am new to the diesel world. Please ask questions if I did not give enough info. Let me know what I can do to make this better.

Thank you,
Eric.
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Old 04-29-2013, 10:35 AM
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This sounds a lot like my truck. I even have the 6 spd and am getting 12.3. I want to buy a chip to get better MPG, but not sure which one. Did you ever find anything out? If not, hopefully this serves as a bump. Thanks Guys.
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Old 04-29-2013, 02:31 PM
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welcome to the org to the both of you, a cold air intake, and exhaust go a long way on these trucks, my STOCK 95 f350 cclb dually with 4.10 LS gets 15.75 mpg, and my CCSB 4x4 97 f250 gets 20 hwy, and 17 city, you can achieve this buy lightning up on the go peddle, and keeping the rpms under 2k, your not gonna win any races but your gonna pull like hell, if you guys are going off the lie o meter in the roof with mpg calculater your doing it wrong, the only way to get correct results is to hand calculate you mileage vs gallons
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Old 04-29-2013, 04:32 PM
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Thanks for the reply

My truck is a late '99 and I hand calculated it. Not sure on the gear ratio of the axle. I plan on getting some sort of an air filter, but exhaust is a little expensive for me at the moment. Has anyone ever used a Beans Diesel programmer? seems like a decent deal $$$ wise. Like I said, I'm not looking for big power as I'll only be pulling 2 cars at the most. But if my MPG's don't come up a ways, I'll be sending her down the road.
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Old 04-29-2013, 06:45 PM
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Lots of variables affect fuel mileage. I have an 03 7.3 and get about 17 unloaded on the highway and about 15 in town (average hand calc and im not easy on the pedal all the time). You should be getting better mileage I think.

Towing my gooseneck its in the 11-12 range or so (haven't calculated with it yet)
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