I just pulled some codes off of my truck and it seems I have the "too rich" code... Anyone know how to fix it? I'm pretty sure that is causing my lower mileage.

 

The two biggest gains will be from Intake and Exhaust, the engine needs to breath easier, Stock systems are restrictive.

 

I can even get 10 on my 91 w 318 lol

 

i got a 92 d-150 318 wit the multi port fuel ijection nv 4500 ya i now lucky to have one wit a dana 60 wit 4.11s in it and im gettin about 15mpg hiway doin about 60-65

 

88 318 was told it was bored.30 over, never checked yet.. might pull heads off this summer to see... but im getting about 14 highway

 

Last time I checked my 82 d150 225 slant 6 was getting 18mpg city. Only straight piped and egr deleted. No other mods.

 

81 W250 318 4wd 4sp. Just bought it. 11.27 mpg on the drive home. Needs a tune up and new mufflers (anybody want some %#@%& glasspacks?)
I dont think it'll do a heck of a lot better but I'm going to try. I still have to check the odometer when I get on a strait road with mile markers. Every old Dodge I've had has been off some.
I'm only using this to move a camper and haul the stuff my VW or MG won't.
Had to go to my Dads today 10 miles out and back. So that trip cost me atleast 10 bucks! To haul his trash.

 

@bobbyz if I had any money I would take you glasspacks I've been lookin to get some but I don't have the money. :/

 

82ram150 you can have my glasspacks ! My ears bleed when I have to drive this thing.
I mite try putting some tail pipes on it. Right now it's headers into glasspacks then a a turndown right under the back of the cab.
But it's got that cool " hey cop your a jerk pull me over sound ! ".

 

@bobbyz where do you live? I live in Gresham Oregon.