Recently, Testand Corporation conducted an ISO standards test on automotive air filters which can be viewed at this link: http://www.dieselbombers.com/chevrol...r-testing.html.

All I can say is this explains in detail the reason for my statement that in essence, on a relatively stock engine, K&N's marketing is hype, nothing more, nothing less.

(Arlen) SPICER wrote,

“Now that I am not doing the tests and my objectivity is not necessary, let me explain my motivation. The reason I started this crusade was that I was seeing people spend a lot of money on aftermarket filters based on the word of a salesperson or based on the misleading, incomplete or outright deceiving information printed on boxes and in sales literature. Gentlemen and Ladies, Marketing and the lure of profit is VERY POWERFUL! It is amazing how many people believe that better airflow = more power! Unless you have modifications out the wazoo, a more porous filter will just dirty your oil! Some will say " I have used aftermarket brand X for XXX # years with no problems. The PROBLEM is you spent a chunk of ching on a product that not only DID NOT increase your horsepower, but also let in a lot of dirt while doing it! Now how much is a lot? ANY MORE THAN NECESSARY is TOO MUCH!

Others are persuaded by the claims of aftermarket manufacturers that their filters filter dirt "better than any other filter on the market." Sounds very enticing. To small timers like you and me, spending $1500 to test a filter sounds like a lot. But if you were a filter manufacturer and you believed your filter could filter dirt better than any other media on the market, wouldn't you want to prove it? Guess what. Test your filter vs. the OE paper. It will cost you $3000 and for that price you will have the data that you can use in your advertisements. Your investment will be returned a thousand fold! EASIER than shooting fish in a barrel! So why don't these manufacturers do this? Hmmm? Probably not because they would feel guilty about taking more market share.



Now I am not saying that ALL aftermarket filters are useless. A paper filter does not do well if directly wetted or muddy. It may collapse. This is why many off-road filters are foam. It is a compromise between filtering efficiency and protection from a collapsed filter. Now how many of our trucks collapse their filters from mud and water? However, if a filter is using "better airflow" as their marketing tool, remember this....Does it flow better? At very high airflow volumes, probably. BUT, Our trucks CAN'T flow that much air unless super-modified, so what is the point? The stock filter will flow MORE THAN ENOUGH AIR to give you ALL THE HORSEPOWER the engine has to give. And this remains true until the filter is dirty enough to trip the air filter life indicator. At that point performance will decline somewhat. Replace the filter and get on with it.

 

You are right........check out my latest post and see the link to an ISO certified test facilities evaluation of numerous air filters......lots of hype is now verified!

 

The stock filters on a 6.0 & 6.4 are good for over 500 hp. Donaldson filters will hold pounds of dirt before they need to be changed. Why take a chance with your motor with a aftermarket filter.

 

I love my k n filter. I def noticed some more power but its always good to get your truck breathing better

 

All my K&N fipk kits did was make my truck louder. It didn't give it one bit more power. I ran the same times with it & with the stock filter. Spend your money on good tuning & a freeflowing exhaust. I would never put a K&N on my diesel. They don't clean nearly as well as the stock Donaldson filter. Plus the stock one will handle 500 hp. I on;ly have about 380 rwhp so I don't need a K&N If I was building a high hp motor I would look at a better intake but K&N would not be in my plans.

 

ive been running K&N filters on everything i own for over 25 years. i think there great. never gotten clogged and never had to replace one.

 

I purchased a K&N Intake for my 00' Explorer, for the SOHC V6 about a week and a half a go. I've noticed a vast improvement in acceleration, smoother response. The model# 57-2528. I'm waiting to see the difference in my gas mileage, normally 216 miles per tank full, with stop and go driving-some highway. IMHO so far it has been worth it. My current odometer reading-102,000+. This on the original engine and transmission.

de

KD5YFS

 

Smart move!

K&N = junk, snake oil, scam, ect.

A K&N lets more dirt in and wears your engine out nearly twice as fast.

A drop-in Airaid is a better option and is twice the quailty of a KN.