6.4 programmers

[Rollin6.4]

I have a 2008 ford f250 with the 6.4 I would like to get a delet kit and a programer but don't know which one to get. I would like to get better mpg and more power.

[Big Angry Hillbilly]

General 6.4 Modifications

[Motorboy8769]

Go with sct and tunes from Vivian at quick tricks sees mid to high 20's and good power also


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[Clayton1985]

Mid to high 20s....lol, I dont buy it.

[Motorboy8769]

There is a thread about it And I have her looney street I see no lower than 25 26-28 mpg mostly



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[Clayton1985]

I want to believe it but I just cant. With all the variables, power,weight etc it just doesnt seem plausible, to me anyways.(Does the tune de-activate 4 cylinders?!?) Id have to see/experience it to believe it, not trying to be a negative nelly.

[drewactual]

hand calculated or reported to your dash?



reason I ask: one of the old and clumsy ways to get more power was to simply get more fuel to your cylinders by altering the computers reading of rail pressure.. if the rail pressure is 20kpsi, but the computer is understanding 15kpsi instead- it would extend the duty cycle of the injector brief enough to make up the additional volume.. higher pressure means more fuel injected than a lower pressure through the same open time frame; either the duty cycle, (or how long it's open) can be extended, or the pressure can be upped- one of or both of the two gets more fuel to your cylinder..

the fuel rail pressure sensor is somehow and directly connected to the PCM's interpretation of how much fuel you're consuming.. I only know this because I lost a frp on a long highway haul.. hand calculated showed I was getting 17ish MPG's, but according to the lie-o-meter in my information center, I was getting 30+MPG's with my outright failed FRP sensor..

if you're using a programmer that doesn't comprehensively alter multiple tables instead of just intercepting and re-figuring that one, you are making your truck lie to you about it's true consumption..

[wilsonw2]

Originally Posted by Motorboy8769

There is a thread about it And I have her looney street I see no lower than 25 26-28 mpg mostly



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I'm assuming you are runnin 2wd single cab short bed with factory or less tires?


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[Clayton1985]

I dunno but his sig says f350 with 4.5" lift! Id assume 4x4

[raftdaddy]

my spartan with 36 in tires 4x4 supercrew i get 22 empty that is, pulling 6000 pound trailer 12 go figure!! but im empty 90 percent of the time