What is the best way to improve my gas milage on my '05 5.4L?

 

drive down hill?

 

your right foot.

also keep up with oil chages plug chages. your air filter.

and o2's i changed my o2's and got 4 more MPGS.

 

What are you averaging? - The way you drive and keeping up with maintenance.

 

Anybody here using one of those fuel programmer devices that improve your horse power and milage?

 

For your model, - you better read this, from Ford -

http://ww2.justanswer.com/uploads/ti...call_07M08.pdf

 

I have a gryphon and it has a base tune.. It improved my mileage but only because it allowed me to correct the tire size for calculations really. The base tune only improve shifts the 2nd is a tow tune the third is a performance 93 tune. I dont really think they do much for gas mileage. I like it though.

 

thanks for the info on the injectors Jethat,I'll have to check into that!

 

Get 3.15 gear ratio.

Also get a used Honda Civic to drive.

 

Aren't you just a basket full of good ideas? I'm surprised you didn't suggest getting a prius.

- NCSU

 

gotts mod? exhaust, slow acceleration. shifts under 2K

 

the 3.15 axle ratio has been proven over and over and over again to yield worse mileage...

 

agreed. Lower gears are needed to get these beasts moving..

 

If you haven't seen Craposaurus's other posts, it pretty apparent he forgot to pay his brain bill this month.

- NCSU

 

unless he drive downhill all the time