I just put all my mods on and drive good 80% of the time and just checked my milage.......13!!!!! what the F--k!!!

I cant believe it, I thought that this stuff would help that, Check sig. 270 miles to a tank on a 25 gallon tank is not very good, any thoughts?????

I also am thinking of switching to full synthetics oil... What do you all think, and give me some personal experiances. please, any help would b great.

 

How many miles does it have on it. Have you thought about maybe a mild tune-up like plugs and a fuel filter.

 

Mine diden't get good gas mialage untill about 17,000 or so,
break in period i guess.
Reset the computer??
maybe... you thought of that diden't you..

 

sounds like my old automatic ... i got no more than 15mpg on all highway driving.

 

haha yeah this truck sucks on gas!!
I get 13-14 mpg after all these mods and sometimes wonder if I'd be getting better mileage with the 5.4!

 

it's probably the dual exhaust, ESPECIALLY if you don't have an X or H pipe connecting them. Guy's with the blown 5.4's don't even need dual exhaust

 

negative..

these trucks just plain suck on gas when you mod them.. I don't have duals (altho I really want them) and my mileage is 270 miles per 20 gallons.. that sucks!!!
when I first got th truck I was a steady 15.9 mpg.. then after the mods, forget it, gas mileage went down the drain

 

RedFlarside2000, just a tip if you would like to get better gas mileage..

don't drive over 2500 rpms' .. you'll reduce the guzzlin alot!

just put the hazards on when merging onto the highway

 

<-------has the same problem LOL


patrickjp, that is the funniest thing i have heard all day

 

You guys are a bunch of lead foots, but what am I talking about I am too!

Just filled mine up: ending mileage 360


Eric

2001 xlt f150 flareside
4.2 v6 auto trans 3.55 limited slip

mods:
airaid
lightning front bumper
lightning side scurts

coming soon
spintech gts side exit exhaust
jba headers
superchip
electric fan
wet okole seat covers

 

take 80 off that number after superchip + headers + exhaust!!

 

17.7 MPG. That's what I'm getting. I keep the oil changed every 2-3K, use only 93 octane, and I do a complete tune-up diag. every other oil change. I use regular ole, non-platinum motorcraft plugs. My crusing RPM on the hiway is 3000 RPM which is roughly 78 MPH. My truck likes me, and my wallet....

 

Is it possible the 3.55 gears has something to do with it???
My window sticker says 13-19 in the city and 17-23 on the hiway.
Don't know just my .02

 

Yu are not the only one. It seems that every time a guy puts chip in his truck, his mileage goes down. It turns out that with any mod and increase in power, the foot does seem to push a little harder than before. In theory, the mods should increase mileage, if you drive exactly the same. I have found that with these trucks any type of leadfoot behaviour just pours gas through the engine.

 

The JBA Headers really killed my mpg but superchip definitly has something to do with it too..
A while back people were getting pissed about the banner ad you see above for superchip which used to claim "increased mpg".

notice it's not there anymore!