E-85 With Canned 93 Performance Tune

[Jackpine]

Originally Posted by cleatus12r

I was unaware that he had a flex fuel truck.

Ah - I see. As far as I know, all 08+ trucks are flex-fuel and he seems to have a 2010, looking at the screen name. (Of course I'm performing a WAG here, aren't I?)

On a slightly related topic though, I wonder how they create a 102 octane mixture using E85? As shotgun implies, I don't think the real (R+M)/2 octane rating is that high, just from adding corn alcohol. (And shotgun, you're right about adding 0.5 degrees of timing for every octane number. But, he said the octane was 102, so the timing advance would be (102-93)/2 = 4.5.)

To the OP - are you in Canada? Your name tells me you possibly are, and if that's the case, you may be seeing an octane rating that is "Research", not the "Research + Motor" average. The pump should tell you this. If it's "Research", the (R+M)/2 rating will be quite a bit lower and I'd be a little careful adding timing. I'd guess maybe the (R+M)/2 rating might be around 95?

- Jack

[Skip_1074]

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.

[ticopowell]

It can never hurt to give Bill more information, but he does already take into account the E10, and your truck should be able to compensate for the E-15 even if it isn't FFV.

[Jackpine]

The Government (Dept of Transportation?), if you trust them, recently stated that the more recent model vehicles (I think 2005+?) are fine with E15. And, I understand they're looking at doing the same for anything made after 2000 I think. I may have these years wrong, so if anyone is sure of the years, please don't hesitate to correct me.

It doesn't make me real happy about my 1991 daily driver though.

- Jack

[cleatus12r]

Ethanol: It's corny.

And stupid.

[Jackpine]

Originally Posted by cleatus12r

Ethanol: It's corny.

And stupid.

I totally agree, and besides (as I've said many times), corn alcohol belongs in a glass.

- Jack