What would it take to get my truck to 18-20mpg? - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 25 (permalink) Old 04-23-2008, 03:41 AM Thread Starter
 
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What would it take to get my truck to 18-20mpg?

Okay... Im sick and tired of 12 to 14mpg... I want 20MPG like the old 5.9's were getting!

I have the 33's but their not the reason Im only getting 12-14mpg, the reason Im getting *****ty mileage is the DPF and not being properly programmed.

So what would it take to make this badboy fly along at 20MPG?

DPF Delete Kit
Smarty Programmer

What else?

Any true tech guys out there know what the ultimate combination for MPG and power would be?

Im towing a 28ft enclosed toy/camper hauler. When towing Im getting down in that 8mpg range. That is un-acceptable, and needs to be fixed... yeah the trailer ss pretty damn heavy, but 8pmg I can get with a gasser and save $1.00 a gallon on gas. Also I want to be able to do 65mph or better over the pass. I also want to know what my Trans/Turbo/Engine are doing. So what programmer do I need? What Delete Kit? Do I need an Intake, different exhaust? Juice with attitude?

HELP!
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post #2 of 25 (permalink) Old 04-23-2008, 12:20 PM
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bone stock with a manual i'm doing those numbers i did it on the first two tanks then it dropped for the next 4 months 400 miles to a tank no towing. when i put 1200x16.5's on my 97 i lost better than two miles to the gallon than the standard 2.45x16" tires. towing a 12000 lb trailer and loading up with sand and gravel i still got 420 miles to that tank on the new 07
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post #3 of 25 (permalink) Old 04-23-2008, 03:26 PM Thread Starter
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Quote:
Originally Posted by dougeendreno
bone stock with a manual i'm doing those numbers i did it on the first two tanks then it dropped for the next 4 months 400 miles to a tank no towing. when i put 1200x16.5's on my 97 i lost better than two miles to the gallon than the standard 2.45x16" tires. towing a 12000 lb trailer and loading up with sand and gravel i still got 420 miles to that tank on the new 07

h

Thanks for making me feel even better!
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post #4 of 25 (permalink) Old 04-23-2008, 04:24 PM
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Did you hand calculate also? Your mpg are way unacceptable....not normal at all! I won`t tell you what my mpg are empty and towing .....you`ll go crazy!!! I would`nt want to be in your pants, but there`s on thing I would do if your dealer does`nt want to investigate more....I`ve done a few years ago. Get a huge 4 feet long piece of yellow sticking material, cut a bunch of nice big LEMONS and cover your truck with it...Usally it takes less than a week to get news from your dealer depending in what size of town you`re living! Last resource but it work 100% warranty!!!:Thumbup:
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post #5 of 25 (permalink) Old 04-23-2008, 05:10 PM
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I hate to say it, but I think you will be hard pressed to pull those kind of numbers on a 6.7. The best I have got now is 16.5 un loaded at 65 mph. I'm pretty hard pressed to believe anybody is getting 20 mpg out of them.

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post #6 of 25 (permalink) Old 04-23-2008, 06:52 PM
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For the last 6 months I`ve been getting 19 to 20 mpg unloaded and 14 to 16mpg loaded(12500lbs fifth wheel trailer) depending on wind(loaded). Hand calculated + overhead is pretty much the same.
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post #7 of 25 (permalink) Old 04-23-2008, 07:56 PM
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I'm staying around just in the overhead deal around 17. I mean yea if I gas on it a bit in town it falls to 14ish but On long drives like goin to the lake loaded down with boat and coolers in bed etc, I still managed 18.3
EDIT: This is just going by the overhead though.

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post #8 of 25 (permalink) Old 04-24-2008, 01:53 AM
 
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instead of *****ing or bragging about my mpg, i'll try and answer your question. DPF delete, edge juice with attitude, stacked with mp-8. that should get into the 18-20 range. now i'll ***** a little. pulled my 10,000 pound travel trailer on it's first measurable trip last weekend. (150 miles) overhead said 8.4. so i'm guessing around 6. i am bone stock by the way, and all the mods i mentioned for you to try is just what i've read is working for others.
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post #9 of 25 (permalink) Old 04-24-2008, 01:55 AM
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Quote:
Originally Posted by Eazydeezy
I hate to say it, but I think you will be hard pressed to pull those kind of numbers on a 6.7. The best I have got now is 16.5 un loaded at 65 mph. I'm pretty hard pressed to believe anybody is getting 20 mpg out of them.
Ditto, sort of. I have gotten 20 hand calculated on the highway going from gas station to gas station on a long trip. Realisticly though, 16-18 on the highway. Besides, it is so much fun getting up to 100 passing three cars in a row and not being able to see them in the mirror because of all the smoke. I just love it. If I could find my stupid programmer I would see what it woulod do on the highest setting.

2007 2500 4X4 6.7 AUTO MEGA, DPF AND EGR DELETE, 2.5" LEVEL KIT, 33" TOYO MTs
2010 3500 4x4 6.7 AUTO CREW CAB
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post #10 of 25 (permalink) Old 04-24-2008, 02:33 AM Thread Starter
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I might run the truck out to my dealer this weekend and have a long chat with them... I doubt it will help to much, but I dont know what else to do right now.

STUPID DPF!
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