Gas Mileage
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Senior Member
Joined: Dec 2007
Posts: 210
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From: Santa Fe, Texas
How much better gas mileage should I expect with a tuner? I wouldn't mind a little extra H.P also but not at the expense of mpg. I'm past the point of having to prove that my truck is better than others so I don't have to have all that extra speed. Don't get me wrong now, the extra getup and go is great for getting on the highway or for passing some jerk that just pulled in front of you and then slowed down because either they are on a cell phone or reading a book.
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Senior Member
Joined: Dec 2007
Posts: 210
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From: Santa Fe, Texas
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i have 35's and a 6" lift with the 4.6 and heres about what i get.
highway:
64-65mph= 18.5mpg
80= about 15mpg
>80= about 11-12mpg
in the city i have gotten anywhere between 11-15mpg
i have noticed a big drop in my gas mileage in the past couple months, dunno if its becuase its more stop and go traffic or if its cuz of a change of the gasoline
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Joined: Jun 2008
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i have an 04 Screw 5.4 i have an airaid CAI and the edge evo, i am running full Synthetic in oil pan and rear dif. my evo is on extreme setting with 90+ octane and i use an octane booster and i am getting 16.1 in the city havnt' taken a road trip yet but have one coming up for thanks giving. i can tell you allot has to do with the driving habits. got to treat the gas pedal like its an egg that has allot to do with more MPG's
Very true. I try not to break 2000rpms as much as possible, and i rarely break 2300. 16.2mpg.
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Joined: Oct 2008
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I've got an 02 with the 5.4L, 9 Inches of lift and 37's. Tested the mileage yesterday and I got 18.9mpg at 68mph. With the gear/tire combination I have the RPM's were at about 1900. I also have a cold air intake, throttle body spacer, and a Superchips programmer, but not sure how much all that helps for mileage.
San Angelo Texas...
'02, F150 Supercrew FX4wd, 5.4L, auto trans, 90K miles, bed cover, BFG All-terrain KO's (otherwise stock)
Trying to improve mpg from 13 mpg - about 2 months ago, I put a K&N intake, and aeroturbine exhaust on in July. Also changed spark plugs after reading tips on this forum and many prayers. The mpg improved only about 0.5 mpg. Most of my driving is on the highway and honestly between 63 and 73. I've noticed improved horspower - but find that the shifting seems to be overreving before going to the next gear. It seems to be out of sync. I asked a "Ford Truck Guy" at the local parts house about it and he said I might need to use a tuner to readjust the onboard computer. Before I spend anymore $$ to save $$ I'd really like to know if this will work. The same guy told me doing what I did would get me closer to 20 mpg - so I'm really not convinced this isn't a load of you know what. Anybody out there have any advice or experience to share?
'02, F150 Supercrew FX4wd, 5.4L, auto trans, 90K miles, bed cover, BFG All-terrain KO's (otherwise stock)
Trying to improve mpg from 13 mpg - about 2 months ago, I put a K&N intake, and aeroturbine exhaust on in July. Also changed spark plugs after reading tips on this forum and many prayers. The mpg improved only about 0.5 mpg. Most of my driving is on the highway and honestly between 63 and 73. I've noticed improved horspower - but find that the shifting seems to be overreving before going to the next gear. It seems to be out of sync. I asked a "Ford Truck Guy" at the local parts house about it and he said I might need to use a tuner to readjust the onboard computer. Before I spend anymore $$ to save $$ I'd really like to know if this will work. The same guy told me doing what I did would get me closer to 20 mpg - so I'm really not convinced this isn't a load of you know what. Anybody out there have any advice or experience to share?
I've got an 02 with the 5.4L, 9 Inches of lift and 37's. Tested the mileage yesterday and I got 18.9mpg at 68mph. With the gear/tire combination I have the RPM's were at about 1900. I also have a cold air intake, throttle body spacer, and a Superchips programmer, but not sure how much all that helps for mileage.