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Any body done any mods to improve gas milage? I get about 18 on the highway 14 or so in town. My wife with the lead foot gets about 12.5 city. I have a 2007 EL 2wd. Had the "clunk" in the transmission when stopping and took it in a couple of weeks ago for the fix and it works great now.
I am actually in conversation with Mike from 5 star tuning right now looking for support for my 2010. Looks promising.
Just google 5 star tuning, it is the first link. Search around this forum (more so in the F150, super duty sections) and you will find testimonials. I am seeing V10 guys go from 7mpg to 10mpg with just the economy tune.
I have noticed on my 07 EL that it is very important to use a light foot around town. My mileage seems to go down hard when you go too deep in first gear, that 4.17 is just to start the momentum. I would like to see some lockout for first, other than a manual shift for that very light town driving. Even 2nd gear is in the 3's, which is way lower than anyother FoMoCo automatic I have driven in the past. I have tried a 2nd takeoff in easy traffic and it works very well (.02) except it requires manual shifting on up from there. Yes, I am very well aware just how heavy these things are.
I'm thinking (see if anyone else agrees with me) that the enrichment starts at a fairly small drop in manifold vacuum, so the light foot is very important. It was/is hard for me to let the soccer moms in their mini vans (you know the type) go ahead and run on off at the lights.
I have never run the actual numbers for mpg, just used the display, but it seems to me that (for some reason) any prolonged idling makes that avg go to *** in a handbasket. Since the processor does a running average, you wouldn't think idling would have that big an effect, but it seems that way to me. Thats my story and I am stickin to it
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