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I traded my 6.0 off for an 08 F350 6.4L, great truck! 67,000 miles, and loves pulling trailer. The only problem is mileage. Has 3.73 gears, 20 inch tires, nothing special. get 11-12 normal driving, city, highway, it doesnt matter, still sucks the fuel. Get about 6-7 pulling a 32ft gooseneck weighing about 19,000lbs.
Had enough of the bad mileage and gave in and bought a DPF delete and H&S mini maxx tuner. Was hoping the mileage would jump about 5mpg, thats not the case, Im getting the exact same mileage(11.4) as i was stock. Running the easy level on the tuning, i switch between the mild, wild and hot...
Do i have another issue being I have such horrible mileage? Its winter here now, so it's 0-30 out depending on the day. 5-10 mins of warmup in the morning...
Best mileage Ive seen with this truck is 12.5, that was a 4 hour trip.
Truck does not have an exhaust kit, just DPF delete. where is the pyro located on the 6.4L? And how to you get to the Trans tuning with the mini maxx, i've looked around on it and cant seem to find it.
Thanks much, Carl
2008 F350 Lariat 6.4L
AFE DPF Delete pipe
H&S Mini Maxx Tuner
Also an Allis-Chalmers Collector