hey guys, so i have a few questions..

how does your truck run now? Power wise and everything? did your gas mileage go up or down?

 

Well, i bought it with the motor all ready in it, it's carbed, has lots of power the only thing i don't like is the 6-10 mpg.

 

sorry, should have been al ittle more specific..

need info from the 98-00 guys

 

Ill let you know when i get to the driving stage of my project lol!!!

 

How about a 96 guy? You just gonna leave me out like that? Lol

I am OBD 2 and all. The only difference in the trucks are the frame and suspension really.

 

haha my bad tyler, i guess i will include you haha..

 

my mpg went up. Mainly because my truck runs a bit more efficiently with the 5.0 in it. my 3.0 sucked gas trying to keep me up to speed. Chris will have to help confirm on that as he is in the same boat I was in. I'm not sure of my exact mileage anymore since I havnt got around to wiring my odo and speedo correct yet. and I have a bad cat and a couple bad O2 sensors so its sucking a little more gas and not running perfect anymore. I need to remake the exhaust with 2 performance cats and new o2s and hopefully headers and then it should run better.

 

so when i do this swap, I will have to redo the exhaust, correct?

 

yeah you will need to get the cat system from the explorer, and then make your own cat back or mod the explorers to fit(hangars are a bit different). or remake it like I am and use some performance cats with o2 bungs before and after them so you can plug all the o2 sensors back in.

 

where can i get some o2 bungs? i need one for my wifes jeep and cant find them anywhwere?

 

hey andy, you got a build thread for your swap? and can you post up some pics of your engine bay with the 5.0 in it?

how many miles did your engine have on it when you put it in? i dont want to get an engine with more miles than my 4.0 which is 84,500.

 

do a search for mudslangers thread... hes doing the swap right now, might be of interest for you! arent you looking at doing the coilover swap too?

 

yes, but the coilover swap is going to have to wait.. gotta get the truck running good first..

 

or if you have a cool state like FL with no emissions than just run no cats!

 

i bet its SOOO LOUD with no cats.. Could sound good with the gibson though..

 

It won't be like a super duper difference without the cats. It'll be a little louder but it won't be huge.

 

hmmm. i may just have to do this.. what about performance wise? would i get more performance with the magnaflow performance cats or not running any at all?

 

you probably will want to run all your cats and O2 sensors for the efi to know what is going on with the engine

 

yeah i was thinking about that, take the cats off, no O2 sensors, which is bad lol

 

since its a basically stang engine and you can buy Catless xpipes and run them with MIL eliminators all day long its not gonnna do damage to antyhing. sound wise lil louder just get a good muffler and youll be set. When i do mine Im gonna change back to single side exit or like an f350 RBP "dump style"

 

my truck doesnt have cats or mufflers and its not that loud but im not a 5.0 but im just saying, my dads f150 only has one cat and its not that loud

 

when i get my exhaust done, ill show you how i ran my pipes!!! Hopefully ill have it all completed by next week!

 

I have no cats and my truck isn't that loud... and for some reason I done get cat codes

Oh well, im not complaining!

I have been pulling out 16.5 MPG back roads, with 4.56 gears, 35's and Dana 30 solid front axle that spins when the tires turn (no hubs to unlock).

My 05 had a 3.0, 5 speed, 4.10 gear and 32's and was 2wd and regular cab. I usually only got 17 MPG out of it on back roads, and that was with the JBA headers...

I have way more torque, more HP, sounds better, Im bigger, have 4wd, etc... now, so I think a half a mile per gallon decrease is no big deal at all. If this truck was exactly the same, but had a 3.0, mileage would SUCK, and power would be nonexistent.