From my experience I’d say the following:
Forget the exhaust and intake mods unless you want them for something other than MPG
. I did the Poor Man’s Tymar and a 4” exhaust and saw zero improvement in MPG
A tonneau cover – either hard or soft – is an excellent idea. Expect 2-3 MPG
Forget the computer module. They are great for speed, acceleration, and smoke but won’t help MPG
. Most will hurt your MPG
. I have a specially burned MPG-special chip and it only helped me 0.75 MPG
. You have a lot of cheaper things to do yet.
An overdrive unit – both Gear Vendors and US Gear make good units – will definitely improve your MPG
. They are salty and I suggest you consult your favorite automatic transmission guru about them. They slow down the engine and the TC
and that will cut fluid flow through the cooler. If your guy says “No problem” then go for it. I would expect a 2-3 MPG
My improvement expectations are based on your driving cycle to be much like mine – about evenly split between urban/suburban, rural roads, and Interstate and you driving the posted limit for each.
I assume you have checked your brakes for dragging.
These trucks are very sensitive to tire inflation. I run 100 psi
(25% overinflation) on my OEM-style Firebombs.
The number one most effective mod is to adjust the nut behind the wheel. One good hardware aid is a pyrometer. Drive to keep it below 600 degrees and the RPM below 2000. Check out www.cleanmpg.com
Ignore the politics and check out the articles linked on the right side of the home page. They cover “hypermiler” driving. Unless you are far crazier than I am you will never do all the stuff he does. He is the extreme, but he has the goods – numerous documented instances of getting over 100 MPG
and routinely double the EPA mileage figure. I think he gets 47 MPG
out of a Ranger. Take what you think you can use and forget the rest.
I would encourage 428qbird to peruse this forum. Lots of good stuff in here.