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my new powerstroke!

9K views 64 replies 34 participants last post by  Grassman 
#1 · (Edited)
ok guys and girls here are the pics









08 F350 XLT, 6.4 twin turbo (she moves) i got the tow cammand system with upfitter switches and some other dodads

so far 10.5 mpg (ouch) but the motor only has 400 miles, its my first ext cab but so far i like it. now i can take the fam with me to fo wheeling and no one has to ride bitch.

does anybody know if there is a good programmer or chip to help my mpg's?

anyway let me know what you think!
 
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#20 ·
I have a few friends that have 6.7L cummins crew cab 4x4's and the mileage sucks on them too. If you want to get some mileage you have to get that DPF off from your truck....check out spartentechdiesel. Matt has a tune thats making 500+RWHP from the 6.4L with just tuning and removing the DPF/DOC. Not to mention most guys removing the DPF's are getting in the 17+mpg range. Same goes for the 6.7L its a turd for fuel mileage as well. But I have heard several people getting much better mileage once they remove the dpf and block EGR coolers.
 
#44 ·
the 6.7s are a great damn motor my buddy gets 22mpg with his on the high way and 15 in town. and for those who are gonna ask, well whats all done to it: 6 in rough country lift, 37x12.5x17's cooper stt's, chip, strait piped 4 in exhaust with dpf delete, sb cold air, south bend dual disk clutch, and i cant remember what else right now. and it tows like there is nothing behind it
 
#52 ·
no I dont believe everything I read. When I post mileage results its not good ole boy ******* numbers. Its legit. I have owned 2 duramaxs (LB7, LLY), 2 6.0L powerstrokes, and now my 6.4L. I love tinkering with diesels, and trying to get the best fuel economy. The duramaxs from all of the research and personal experience I have had by far get the best mileage. I dont believe there is a 6" lifted 37" tire 6.7L that gets 22mpg hand calculated....NOT A CHANCE. Now if you were saying you got the numbers from the lieometer in the truck then, yes I would agree. My 05 duramax 6" lift on 35s would say I could 25-28mpg on the lieometer....hand calculated was a best of 20mpg that was drafting off from a semis bumper at 62mph. I can get my 6.4L to show a tanks fuel economy at 25mpg but best hand calculated to date is 18.9Mpg. I understand you can build a truck for fuel economy, but a truck with 37s and 6" lift is not.
I'll have to agree. If there's one thing I learned over the years with diesels, people like to lie to themselves when it comes to mileage. My last 7.3L with an 8" lift on 37"s got about 14 mpg on the freeway cruising at 75 mph. Now given, the 7.3L has never been the king of fuel mileage, but still I don't care what kind of tunes you're running. A lifted truck will just not show the kind of mileage people like to claim.
 
#53 ·
I'll have to agree. If there's one thing I learned over the years with diesels, people like to lie to themselves when it comes to mileage. My last 7.3L with an 8" lift on 37"s got about 14 mpg on the freeway cruising at 75 mph. Now given, the 7.3L has never been the king of fuel mileage, but still I don't care what kind of tunes you're running. A lifted truck will just not show the kind of mileage people like to claim.
exactly:thumb: Im glad someone is honest about fuel economy. Man I have done so many tricks to get fuel economy with diesels, and a lot of them help to get you higher mileage. Like last weekend I pulled my enclosed 21 ft snowmobile trailer (loaded weight 6k lbs) I was pulling it fast like 80mph. I was running my spartan 250 tune, and I got 10.2mpg(hand calculated). Well some jerk off with a lifted cummins dually told me he just pulled at 80mph pulling 8klbs and got 15mpg. No offense to cummins lovers, cuz its not just cummins guys that lie about fuel economy, its people in general are ignorant and have no clue. I have a buddy with a 6.4L on 37s, 6" lift with a spartan 310 tune and tells me he can get 21-22mpg. BULL CRAP!
 
#21 ·
installed a spertan 210 programmer with a DPF delete, WOW better milage and mor ponys
will have to see, but it looks like im seeing a 10% to 15% in mpg's and i only have 12k on the motor
 
#28 ·
Nice truck. My 94 turbo idi 7.3 gets 8-13 mpg depending on load. It seems to hover around the 10 mpg with combined driving. Seeing your posts makes me feel better knowing not every Power Smoker out there is getting 22 mpg. Even though my truck is an old school 7.3, it pulls like a mad dog. It's good enough for me, I don't have the coin to buy a new truck.
 
#36 ·
Damn nice truck, I have read nothing but good about the spartan tuners on the 6.4, seen a few put down over 500rwhp. The noise level on the 6.4 is amazing, you can't even hear them running next to mine...hard to believe its a diesel when it is running at idle. As you found out, the worst part is the mileage...but that tuner and DPF delete should really help out.

On my 6.0, I can get around 18mpg if I keep it around 60-65 on the highway....that is with 3.73 gears and 38's. City driving is around 13 if I take it easy (which I rarely do). Pulling a trailer kills it though, last weekend I averaged 8.9 mpg's pulling my 24' flatbed with 2 quads and my RZR on it (total weight probably 5-6000lbs), which really sucks for a diesel IMO. Hopefully a set of 4.30's or 4.56's will help that out.






English please?
 
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