i did a search and i couldnt find anything relating to experiences dealing with K&N filters. (which im sure i did the search all wrong lol)

basically i already know they are suppose to increase HP and are reusable and yadda yadda yadda... i want to know how true this is, will it increase fuel mileage any? i find it hard to believe it can actually make a HP difference unless you are doing any mods to your actual intake/throttle body, not air filter.

i dont know, not too sure if the 50 dollars is worth it or not over the stock air filter, so i figured some of you guys might already know or can contest such differences. any help will be great, oh btw this is for my 2005 5.4 V8.

Jesse

 

I have noticed very small increases all around with just the filter, FIPK's probably moreso. As long as you clean and follow instructions, you'll be set. Instead of buying paper filters all the time, you'll save money in the long run.

 

I know a couple of guys that have replaced their stock filter with a K&N and they're happy with it. No increase in power, they just wanted a better, and re-usable, filter.
You're right that the only way to get a little better performance is to replace the entire air intake. The only performance mods I've made so far to my 4.6L are a cat-back exhuast (gained 1.8 mpg highway just with that) - plus it sounds better - and a 3" AF1 intake (hasn't made a mpg difference but there's a noticeable power increase) - plus it really sounds nice!
A filter alone won't do anything other than save you the expense of buying a new one every 30K miles, just clean it and put it back in. The stock intakes are designed to be quiet, as they should be. Performance is a distant second.

Hope any of that helps!!

 

Surprised that the search didn't bring up lots of arguments. Been knocked around a lot. I have had the dropin in my truck for 50,000 miles. You do not get any noticable power or mileage gains, but you do save a lot on replacement filters. I'm happy with it.

 

I used to use a K&N drop-in filter on my truck and I didnt notice any increase in MPG.
I had issues with the filter fitting really poorly and not sealing well. I found a thin layer of dust all in the intake of my truck, so I switched back to the OEM filter because it fits a lot better.

 

I had a drop in K&N filter for awhile and there was absolutely NO noticeable gain in power or mileage. But in the long run you would have money on filters.

I since added an Airaid FIPK which also has a K&N filter. The Airaid gave a noticeable increase in power over 3,000 rpm, and the engine is louder under full throttle.

 

It is not true. At least I'll never be convinced. On a system, the only way I can see increasing the HP with increased air IN, is to also increase air OUT.

I think it is a good filter, but to reuse one and buy the oil for it and all that cleaning crap is a waste of time. The filter is $32 bucks at Walmart for my 05. I just assume buy a new one every year (16K miles).

I gave mine to my brother and bought the Amsoil filter. When it needs it, I just take an air hose and blow it out.

 

Hi.

Yeah - ya did the search all wrong... LOL!

Check this out ...

https://www.f150online.com/forums/sh...39&postcount=2

Just confirmation of what the other folks are saying in this thread.

Cheers
Bubba

 

I put my K&N drop-in, took out my silencer, and did the air-box mod all at the same time. My mpg has picked up a little bit and it's a tad bit more responsive but my favorite part is the sound it makes at WOT.

 

I still use the K&N drop in, however it doesnt fit too great. I have to remove the filter housing and install the filter outside of the truck. If not I throw a damn code. It's time for the AF1

 

my K and N drop in sealed fine (97 F150)but I still found dust in my intake on the clean side of the filter. check K and N's marketting and advertising. they always talk about superior air flow never superior filtration. the only thing they will mention is that their filters meet an SAE standard. Do they barely meet the minimums or exceeed the minimums? I would put my money that a K and N barely meets the minimums for filtration efficiency.

 

Thanks guys for all the info, i basically knew this couldnt be all exactly true but i went with it anyhow just to gain the benefit of only buying one air filter for the time i own my truck. i just couldnt see an air filter gaining much of anything, but what the hell...a sucker is born every day lol and im one of them lol

mine actually sealed up just fine, and i do have dual exhaust on my truck which did give me a lil kick. i think upgrading my exhaust was one of the best upgrades i did to my truck considering it gave me some sort of power.

no performance gain with the air filter, but its nice to know i wont buy another air filter, thing is, i will need to own this thing for 7 years for it to pay for itself LMAO so im not too sure if this was a smart buy....

i guess it could be worse lol

but thanx for all the info,

Jesse

 

slamma jamma you did that airbox mod too????. i screwed it up and cut to much off the bottom where it clips onto that support plate lol. o well. i bought a c.a.i of e bay for 60$. it said for 97-03 f150, expedition. its works good. took some modifying. had to fab up a bracket. k/n stlye dry filter. getting an extra 1.5 mpg. sounds nice under full throttle.

 

I put my K&N Inside a stock Cold air box off a 2001 - I ruined my stocker trying to get the silencer out Freakin glue cheesed me off - it ended up in the bon-fire after I trashed it.

I plan on doing the Rubbermaid CA mod - That's gotta be the best mod for the Do-It-Yourselfer

From the stock filter to the K&N Filter you'll get a small increase in response and power + mileage. If you stick with the cold air setup..

Sucking engine compartment air takes away from everything. The motor works harder to convert ponies out of warm air, Colder denser air is much easier and takes less effort to convert- that's just a proven fact..