I have a 2002 7.3 L F250. I have the 3.73's (I believe) I am getting 15-16 mpg pretty much all around. What products have people tried to improve fuel economy? Do any of the aftermarket add ons work?? For example K&N cold air kit, a chip of some sort? or better exhaust?? If any of these do work, the how much can I expect to gain from them?
Thanks for the help.

 

Cmon, nobody has tried any of these products or concepts? Little help please

 

Sorry I keep my cars stock [sm=forgetit.gif]

 

Well, technically if you improve your intake and your exhaust, you should get better mileage, so a high-flow air filter and exhaust kit would boost your hp, and should increase your mileage...my advice is to stay away from chips and computer mods...they don't always work w/ the system and usually end up costing you big $

 

Your milage is at the normal range now. With a programer set at 80 hp and Fords ASI air filter upgrade on my truck { 2000 f250 supercab long box auto 4x4 3.73 gears} intown stop & go driving fuel econ is 13 to 17 mpg. I do think that I do get better milage towing and on the hyway empty with these mod. I know that I have more power and I hav'nt lost and milage.

 

If you want mpg buy a cummins.and chip it you will get 23-26mpg guaranteed!!!!!

 

and you will also have less power and less hauling capacity ,you pay for what you get

 

I have a 7.3 diesel now and im gettin like 14.5 MPG around town and im not an easy driver i got an air raid airbox 5inch exhaust and a superchips programmer and i have 35inch tires with a 4 ich lift i reccomend getting the three things and they will improve the fuel economeny a little bit they helped me

 

i've got a K&N intake and 4" exhaust from the turbo back, running the superchips programmer on my '02 7.3 four door long bed, and rolling on 38x 15.50's. even pulling a heavily loaded trailer i'm getting 16mpg.

 

get rid of the 35 inch tires and get rid of these crap plug in chips there is a reason ford cancelled warranties on vehicles with chips.and your mileage will go up tires exspecially