What have you guys found to work best for the 6.4 to improve mileage? Tuner (which one)?, exhaust...? What else?

 

I'm actually having a SCT tuner installed as we speak and also a dpf delete pipe. I'll report back what kind of performance increases I get.

 

Cool, I was actually looking at that one. Anybody else with this set up?

 

I am running a Livewire with custom tunes from Innovative diesel, love the setup!

 

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As my sig states I'm currently running an SCT LW w/Gearhead tunes in addition to the Innovative Diesel Performance Xtreme Tuning package that came with it.

Mileage with a delete will increase, how much it will depends on whether or not you can keep your foot outta it!

 

Been running this tuner now for a couple of weeks and have a couple of refuelings under my belt. I'm very happy to report 19.1 MPG's. Before the tuner I was getting 14 MPG's. This is a mix of in town and interstate driving. Haven't towed anything yet with the tuner installed. I'm running the "Street" tune. Very happy. Calculations have been done with an Iphone app that keeps up with everything.

 

Thanks for the report... Does it have an economy tune?

 

I have the SCT Extreme. It has, Tow, Street, Performance, Extreme tunes.

 

I just Bought the H&S mini maxx I took a trip to new orleans yesterday which is about 600 miles round trip, Before the H&S tuner i was getting 10.5 mpg now im getting 16.5 mpg on the hot tune. My truck specs are in my sig.

 

Best thing is don't drive it!

 

Not exactly the kind of info I was looking for, thanks for the advice though.

 

Driving habits are the true factor from what some have been saying. The 6.4 does not like city driving. It likes to be on the open road.

I'm running H&S Mini Maxx, 4" Downpipe, 4" DPF/DOC Delete pipes, 4" aFe DPF back exhaust, S&B intake. Love the setup. City driving, I average 14-15, hwy can be as high as 18 unloaded.

H&S has quite a few tunes, I run Hot Damn on 300 all the time.

 

Cool, thank you for the info. I'll look 'em up and see what they have. Just trying to see what's out there and get as much info as possible.