I used this tune but modified it slightly
Shift Firmness: 20 for all gears
Timing: 1.0

I was averaging 15.5 mpg using the out of the box tow tune. From what my display says I'm at 16.5 now. I did this at a half tank, so let me run this a bit before I give you the actual measure of MPG's. I use 89 octane only.

 

Your shift firmness being 20,doesnt that knock ya back in your seat harshly or no?

 

nope or at least not to me. Maybe i spent too many years in a manual, my shifts were pretty snappy.

 

I think ill up my firmness some. Im used to my 450HP Powerstroke throwing me back in the seat so this really isnt getting it done for me. I was getting 13.5mpg before this tune. Im nowup to 15.5 and currently running 87 actually. Going to bump up to 89 and up the timing to 1.0 next tank of fuel.

 

Def let us know how it turns out with the addition of more timing

 

Ill have a update in a few days just fueled up this am.

Has anyone ever ran Race Fuel say 101 or 103 octane in their truck Obviously like at the track or races? Wonder how far you could go with the timing then? Or if it would handle it?

 

Ok cool man,looking forward to results

Doesnt Race Fuel have lead in it?

 

Im not sure.. honestly thats why i was asking. But Sunoco sells race fuel idk if there allowed to sell leaded gas.

 

I am wrong.Race gas you can get unleaded.

 

Dont want this thread to fall back and ppl forget,so i am moving her back up

Still hopeing Crashtech and Bucko make this a sticky as it would help allot of ppl out i belive.