Just joined.... I have a 2001 Supercrew 5.4L 2WD / 60,000 miles. What if any modifications can I do to improve gas mileage?

 

depends on how much you want to spend. K&N drop in filter and magnaflow exhaust are the most popular. then some people venture to get thier computers tuned, which does wonders on gas mileage.

 

Can I do this for around $500?

 

Not all that stuff you cant.

 

buy a bicycle.... ha, ha....

If you are getting < 10 mpg, then something is wrong with the motor or the way you are driving.

If you are getting > 15 mpg, then that's all you are going to get.

If you don't want to buy much gas in general, get the bicycle or a 4 banger.....

Mitch

 

The best mod for mileage AND power for me was the electric fans. Picked up a couple of mpg's and a few more ponies.

 

I intsalled e-fans and a Diablo Sport tuner and noticed no change in MPG. Just keep your air filter clean and tires inflated.

 

I have a 98, 4.6L with 189k mi on it, and it's hard to average more than 10-12mpg. Is this normal?

Also, I just bought an Air Force One intake, and I was considering the ignition package from Troyer Performance (coil packs, wires, and plugs). Will this help in mileage?

 

When I started my quest for better milage out of my 01 S'Crew a local Ford god told me to make it breath. The air intake is restrictive all the way up to the manifold. Open it up and clean it up. The secret there is a new Mass Air Flow Sensor as well. This one part provides your computer with a ton of information and the OEM is restrictive and extremely conservitive in it operation. Exhaust is the next big trick. You probably have four catyalitic converters and they are all restrictive. Along with that bigger pipe and high flow mufflers. Don't over look the ignition either. Go to the Ford Racing Parts Web Site and READ their Tech Tips. Those books that you see in parts stores offer books for Ford performance. There is one that documents the gains and losses of various parts based on dyno tests. READ, READ, READ. Oh yeah and only because there are folks around here that think they are hyper important. Electric Fans. Good ones. The sticker shock is going to knock you out when you start buying all the parts you will need and want. So good luck and I hope you have a credit card cause you are going to need it. If you are interested and if you ask I will tell you what all I did to mine.

 

I get around 15 mpg in town, 18+ on the highway with a 4X4 reg cab with a heavy foot. Consider a tune-up, how many miles on O2's, ignition components, air filter?

 

O2's and ignition are all original. I have a K&N drop in that i need to clean, about 10k on that.

I am also considering the ignition upgrade package from Troyer Performance. This includes new coil packs (MSD, I think), wires (also MSD), and plugs, which I may wait to install.

Also, my intake just arrived, and I will clean that, maybe get a new filter if it needs it.

By the way, how much did you pay for your pulleys? And how much did they help?

 

it is silly to spend money for milage gains. you will never get your money back with better milage. Do the mods for your own personal pleasure to make your truck more comfortable... like exhaust for better sound. A side of that MAY give you a little better milage. But that is secondary

 

How are you correcting for the larger MAF? You do realize that the transfer function change requires correction via custom tuning don't you?

A larger MAF on a stock or lightly modded truck is going to provide minimal gains.

As for a 'ton' of info - all it's providing is a voltage ( converted by the PCM into A/D counts) that correlates to the Mass of air flowing into the intake. That's all it measures.

Change the MAF & the PCM doesn't know and can't correct.

On a stock truck the factory cats are adequate & not overly restrictive.

The factory 'Y' IS restrictive - probably the most single restrictive part of the exhaust, bar none (on pre-04's).

Exhaust mods need to account for maintenace of exhaust gas velocity & cylinder scavenging - go too large and/or choose the wrong components ( baffled FartMaster for example) and that goes out the window.

 

The only thing that got me better milage for the money is replacing the EGR valve. An old mechanic told me that years ago. I always change befor a long trip and what I save pays for the valve but I gain in the use till the next long trip. I also over inflate my tires using nitrogen. It does help.

 

UHH!
Yes
Yes
Yes
yes and
Yes.
Amazing Ain't it?