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In general, ANY exhaust system upgrade that significantly lowers the backpressure of the exhaust system (by exhaust flowing through it more easily) will improve fuel economy. This can be done with a "single" exhaust, but is sometimes easier to do with a "dual". An advantage of the duals is that you can use two mufflers rather than one free-flow muffler. This can either provide extremely low back-pressure, or - if you choose - retain more of the factory exhaust sound with just a slight sacrifice in back-pressure (but still much lower than the stock exhaust). The two three main upgrades that you can do to improve fuel economy are, in order of easiest and cheapest first: switch your whole drivetrain to premium synthetic lubricants, upgrade (replace) your engine air intake system, and install a tonneau cover. Each of those is likely to improve fuel economy by 5 to 10% (assuming you choose your lubricants carefully). Here's a link to fuel economy tips and details on those three suggestions: http://www.ultimatesyntheticoil.com/Improve_Fuel_Economy/Increase_Fuel_Economy.htm
Yes, dual exhaust will improve milage. Then again just changing to a free flow muffler and the pipe from there out will also give a slight increase. A good cold air intake, like AEM has ( non-oiled dry filter) will also give an increase. Unfortunately a tonneau cover will not. The way pick ups are designed, a cover, dropping or removing the tail gate will create turbulance that will increase drag and therefore reduce milage. with the tailgate up it actually forms a bubble that helps air flow over the truck. Right now I drive a 2010 F150 FX4. The only thing I did so far was oil and filter. I put a K&N oil filter on it and put 6 quarts of Royal Purple oil and 1 quart of Duralube in it. On the interstate with the a/c on and cruise control set at 65 I am getting between 24.1 and 24.6 mpg. I would try this on your truck, or any other vehicle first. Second would be find a reputable shop and just have them do the back half of the exhaust. Try for 3 inch pipe to the muffler and a single in/dual out with 2 1/4-2 1/5 pipe out works fine. Single in/single out set up the same way will give about the same results.
What else can I help you with?
Will an exhaus help your gas mileage for your 2010 f150 xlt 4.6?
A dual exhaust system & or headers will increase fuel mileage but only slightly. Not enough to recoup the expense of the systems.
Fuel pump relay location 2005 f150?
where is the fuel pump rely on a 2005 f150 with a 5.4
Can you get true dual exhaust for your 1996 f150?
yes you can on eBay too
Where is the location of bank 1 oxygen sensor for a 2005 ford f150?
The bank 1 oxygen sensor for a 2005 Ford F-150 is located on the driver's side of the engine, upstream of the catalytic converter. It is typically situated in the exhaust manifold or the exhaust pipe just after the manifold. This sensor monitors the oxygen levels in the exhaust gases to help optimize fuel efficiency and emissions.
Would a 1991 f150 dual exhaust fit on a 1992 f150 both are 302 or 5.0L?
yes they are basicly the same truck
What is considered high mileage for a f150?
i own a 2002 f150 and it has 196,000 miles and still runs great. Over 150,000 miles is considered high mileage on any vehicle. That does not necessarily mean there is something wrong with it.
What is the gas mileage on a 1988 ford F150 4x4 with overdrive?
14 mpg
Is there a performance chip for a 1997 F150?
Yes, they make performance chips for a F150. They will add performance and increase you gas mileage to get the most out of your engine.
Would a 1991 f150 dual exhaust fit on a 1992 f150 both are 302s?
It should i don't think they changed the width of anything tell 97
Where is the location of oxygen sensors on ford f150 truck?
They are located on the exhaust right before the cats.
Where is the Oxygen sensor 1986 f150 ford 5.0 located?
Just downstream after the exhaust manifold
Where is the started solenoid on a 2005 ford f150?
On the Starter
