Okay so this topic begs me to ask the question, when getting a custom tune written, should I have specified that we are running E10-E15 where I live? I do have a FFV 5.4L, but do not know if that will make a difference in the tuning. I thought that I read somewhere that Bill pretty much is writing custom tunes for E10 anyways as it has become the normal fuel throughout many parts of the country.
Just to clarify, the 5.4L is a FFV, the 4.6L is not (at least that is my understanding from reading Ford's specs while researching trucks).
To the OP, sorry for the hijack, but shotgun got me thinking.
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2010 F150 XLT SuperCrew 4x4, 6.5' bed
5.4L, 6spd, 3.73LS & Max Tow Package
Gryphon CTS, Custom 87 Performance tune
"Stupid Plastic Snorkle Delete" (a.k.a. Gotts Mod)
Line-X bed & Highway Products "Silverback" toolbox
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