The plugs are mentioned on this page

https://www.f150online.com/forums/ex...-engine-6.html

 

My bad I read that part but I thought it was just talking about the ones that were made when you cut off the billows, I didn't realize it meant all of them, thanks for setting me strait.

 

Has anyone had a severe drop in mileage after doing this? I did it last week and my computer shows a good drop in mileage. It has always been really accurate when i compare it to actual mileage done by hand. Im still on the first tank since the mod so i havent checked it by hand yet but i was just curious if anyone else saw this on theirs?

 

I havent done it yet but more air = more fuel so really any intake modification that increases air will increase fuel use as well.

The argument has always been that if your engine can 'breath' better it doesnt need to work as hard to run, which is true, but how many people are driving easier now that they have this installed. Therefore you fuel consumption should increase.

 

alrite now im tempted to try this..one thing i dont see myself getting a programmer or custom tune for that matter any time soon..my trucks an 08 with the 5.4L..drop in K&N filter.. any problem since im not tuned? theirs no performance mods on the truck and still under warranty

 

bluejay, I have a 2005 5.4 with an edge programmer, if I did this mod where would I get custom tunes for it. Or is the level 3 ok to run with it?? I dont see the difference in this mod and a bought intake they both increase the air flow... how does this make it run lean if the computer relearns? thanx in advance

 

Ok so what if you removed and left it off...? Aside from a slightly higher air temp wouldn't this achieve the same rusult??

 

did it this weekend, took about 30 minutes.

cut the silencers off and plugged the holes.

 

what did you use to cut the silencers off?

 

sawz all, then used a belt sander to make the holes flat and the plugs flush, im going to pull it out this weekend and finish making the rest of plastic flush so it looks a little better. I love the sound when i rev it up

 

hey jenkins u repaintng ur wiper cowl?

 

yessir, did the wiper cowl, rear lights smoked, intake mod, and front passenger hub assy over the weekend. i was in the mood

 

^lol i see...hopefully with some cash layin around ill get into the modd and do some ptm on plastics

 

I like the Idea, although Im wondering (since I have a 98, the intake maybe different then I think) Where does the MAS go now? and do you have a Filter on it anymore as I dont notice it in the photos.

 

the nbs f150 allow for this mod because the air filter is on top of the motor and the mas is right under the filter check the search feature for your 98