racinjason68

after reading about the AF1 it has me thinking..... Found one on ebay that looks just like it and cheaper.

I dont see why it would matter what order you went between the CAI and exhaust.

joebob

has anyone tried just replacing the stock filter with a k&n,if so did id help much or do you need the whole kit to see improvement,I have the 4.6 motor.

NGM

I did that and did not see a huge improvement with the butt dyno. I never did a before and after dyno on just the air filter. I would get the whole kit if I were you. It advertises 7HP on our trucks I got 13 peak hp with it.

mithel

I have a '91 F-150 XLT Lariat 5.0 V8 4x2. It has no mods whatsoever. I want to keep this truck forever and I want to increase my mpgs and any hp or torque gains are just a bonus. I want to add a cold air intake but most of them dont go back that far. An exhaust system will come later but I will need some more skills before I do that. I can follow instructions but have no real experience with trucks. thanks in advance.

princejo

Like Mithel, I'm more interested in what kind of difference in mileage all'a'y'all're getting out of your cold air intakes. After reading through 8 pages of this thread, I'd be inclined to pick between the Airforce1 and the K&N (probably the latter), but I'm only really interested in doing it to squeeze a little more fuel mileage out of the motor. I've got more than enough power bone stock. (I drove a 3.0L Ranger before I bought this truck).

So can I realistically expect to see more that 1-2 mpg difference? I'll definitely replace my paper filter with a reusable one, it's silly not to, but why spend the extra money for the whole FIPK if it isn't going to pay for itself?

F-150 King Ranch

I say K&N FTW!

racinjason68

i say it is gonna take quite awhile to pay itself back, and bet most dont see a 2mpg increase. The 3-5hp gain and free flowing air, I am not sure is gonna add up to much gain in mpg.

claviz13

Pictures?

Bobtail74

Seems like a dead thread ..... but I have the 2006 3valve 5.4 and was eyeballing the Banks system but have seen nobody mention it here.

Tvincent

Looking at installing a cold air intake on a 2006 f150 4.6 not sure what is best prefer a closed filter... Any ideas?? Thanks