Hello everyone. I just recently bought me a used powerstoke, my first at that. I bought a 2015 ford-350 4x4 dually. Truck had 285's on it. It was stock until last weekend, before tuner I was getting bad mpg's. I recently bought a ez lynk tuner with GDP tunes. I baby the truck and it still gets bad mileage like 11-12 max. Love the power and truck but my dodge gets over 15 with 35's. Any secrets or custom tuning company working on mileage that y'all know of? Thanks!
Is this city or highway...what speeds you running...etc....
Milage is a hard number to determine, but I can see 14.5-15.5 with a mild dpf-on tune and 35's and a level when i run 70 mph on the freeway consistently....but im not a dually and I got one step lower gears than you - 3.55. Anything over 65-70 mph kills milage immensely also.
the numbers sound about right for city driving, driving with a light load in tow, or driving 80+ mph, a dually to boot. Prolly has the 3.73 rear end in it and that ain't helping
1500-1700 rpm is the sweet spot cruising for milage, while keeping boost down to 4-5 psi.
What gearing do you have in the rear? I have 4.30, I do not expect to get much more than the 12.5 mpg I currently get (no matter if I am in town, towing, highway, etc...). I am still running stock, but will be buying a DPF-on tune here in the near future.
Yes I have 3.73 gears. I get about 10.1 in town. I get the best 12 on the hwy! I know those 285's don't help also there is a spacer between the duals. Didn't know if cold air will help out any?
Well I only baby it on the hwy or around town! Lol. I have a delete pipe and egr unplugged. I bought truck used with over 30,000 miles. Guess I'm going to make sure fuel filter are clean even tho I don't think it'll matter to much.
It could be the tuning causing the truck to regen all the time. I had canned sct tunes before i was deleted and saw 16-18 mpg with 3.55 and 33's.
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