Perfect!! I have suggested a test to verify this: Pull the IAT sensor out of the intake, and place a tube going to a vacuum gauge. Now, with the OEM
paper filter, see if you can pull any vacuum (high RPM, WOT). Matter of fact, try blocking off half the OEM paper filter, and rerun the test!

 

Guess I'll add my 2cents on the K&N airfilter...I use one, got tired of buying the paper ones for my 78 F-150 400....Didn't notice much increase in fuel milage..After using it a couple years I read an article about a person working for Ford who had access to the testing facilty..Talking actual filtering, dirt......Was not happy to hear that the K&N air filter scored way down on filtering dust..........Good quality paper scored best.........

 

Still going!

 

The K&N will filter just as good or even better "IF" you also use the pre-filter charger. They are listed for dusty extreme conditions.

OBTW: The nice part of that...is you NEVER have to purchase another filter.

Someone mentioned that the K&N does NO good on a truck engine at its optimum rpm range. Maybe for the lower altitudes. However, here at 6000+ above sea level and while towing...it certainly does make a BIG difference. That is when our V10 is making those hp numbers we all like to hear about. Running in the 3500-4600rpm range. The V10 is trying to suck in all the thin air it can, so the K&N type filters help with that flow issue.

I will concede the point that at normal driving the K&N makes little difference.

biz

_____________________________
2003 F250 SD SC 142" XLT FX4 V10 Auto 4x4 3.73s

 

HEY POPS, there are alot of stupid americans still around, those who lost loved ones at Pearl, or in the South Pacific, hurt dies hard. I don't buy trucks from Oshama either, but I'm stupid that way. Sorry that you were offended, I'm offended every memoral day when I stand at the family cemetery. Thats what makes america great, free speach.

 

With K&N coming out with the "pre-charger" filter for dusty conditions is K&N's way of admitting their "regular" filter doesn't filter well.

K&N is also explicit in saying they will not be responsible for damage resulting
from the use of their filters:

"K&N will not be responsible for any other expenses incurred by the customer under the terms of this warranty, nor shall it be responsible for any damages either consequential, special, contingent, or otherwise; or expenses or injury arising directly or indirectly from the use of the K&N Air Filter."

I have never seen this statement with paper filters!!!

 

I own many and use K&N Gauze oiled filters all the time... strictly on my WOT racing motors

I would never run a K&N on my truck motor

It is a fact that the K&N does pass more small particulate until it is properly loaded with trapped dust and crap.... K&N even says this and several independent testing agencies have proved the fact.

And like stated above in another Post.. I have seen on a dyno the fact that paper, K&N or NO filter... the Ford V10 does not have a restrictive intake system below 4200 RPM... I say again up until 4200 rpm Paper, K&N or NO filter there is zero difference on a dyno. Reason...as stated above.. there can be no difference if a filter will flow 800 CFM and the motor only needs 600 CFM

Funny how all of us always think bigger or MORE is better... the volume area of the throttle body is the restriction... You want to scratch your head real hard? Take a look at the total area of a full flowing air cleaner off an old 460 V8 with 4 barrel or a 454 Chevy V8 and you will see instantly that the puny 415 Cubic Inch V10 has easily twice the volume of filtered capacity.... The only area K&N exceeds factor paper is in over all life time cost...

Me... I replace the paper element every other oil change

I only run the gauze un oiled K&N on my drag racing motors to trap out the very large particles and accept that none of these motors are expected to live 250,000 miles

If your Ford V10 truck motor is used every day for racing...go for it... If you want max life out of her... think MC paper element!

 

You don't need to tell me what makes America great. I served two tours in South East Asia and I get a small stipend from Uncle Sam because of it.

I am damn proud to be an American, and after serving in Japan, Korea, Vietnam, Thailand, etc. I am only firmer in my love for her. I also bear no ill will against those where I served. It isn't the hurt that dies hard, it's the hate.

If we all were to live by your code, we would never forgive each other right here in this country. More Americans died on her own soil than in all other wars. It was called the Civil War. Which side should I take?

Or who should I be offended by when I stand at my father's grave in the national cemetery?

I apologize to all for this turning into a debate over who is a better or bitter American.

 

Fred,
As usual, you have brought logic and reason back into the discussion.

 

OK, gotta say it here, because you're doing this publicly.

If you have nothing more to lend to this thread, STOP NOW.

Anything further from you in this thread that is not factual about K&N will be removed.

 

Off Road racers in the dustiest conditions Dirt bike, trucks buggies whatever use Oiled filters most are dual stage foam. Anything that is designed to attract dust needs more mainenance then a throw away filter. Performance wise who cares 10hp on a dyno dont mean 10hp to the rear wheel. I wish they made foam filters as stock replacements it is a little messy to clean but way better in "my opinoin" and alot cheaper but I settle for a K&N and with the cost of some paper filters as high as they are I will clean the K&N 4-5 times throw it away and buy another. I don't believe their claims I use my own judgement and replace the filter as needed as needed. K&N really needs to look into a dual stage filter design that fits in the stock intake.

One Item I will never buy again is an aftermarket exhause and FIPK Kit makes the truck sound nice but not much more then that for $600-$800

Just my 2cents.

 

Yes...I understand from the price end.....Also as we all know there are so many conditions vehicles are placed in, much more than the controlled atmoshere of testing conditions of a lab.........As reading more about the paper elements they do have their place, naturally not in damp or wet, and some are expensive compared to washing, re-oiling........The pre-filter for the KN sounds good to me.........The off road foam filters must be the best......Having a three wheeler from the mid 80s, with a foam-oil type air filter and still going great..................

 

So what. Buy both and call it a day.


biz

_______________________________
2003 F250 SD SC 142" XLT FX4 V10 Auto 4x4 3.73s

 

I say buy only a OEM paper filter and call it a week!!!

 

Sorry and maybe

Didn't you mean: "WEAK".

biz

_______________________________
2003 F250 SD SC 142" XLT FX4 V10 Auto 4x4 3.73s