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13' F150 FX2 - SCREW. AFE Intercooler - Charge Pipes - Stage 2 Intake - Downpipes - Unleashed Tune
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Discussion Starter #1
I'm a proud new owner of a 13' eco. I have always run a drop in k&n filter with the exception of my power stroke which had a CAI. What is the best option for longevity with these high output 6's? The truck has plenty of power for my application so I don't need to "make it faster"
Thanks in advance
J
 

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The stock filter will likely out filter most all of the performance filters on the market. I remember seeing an independent test. A true independent test performed by enthusiasts like us some years back that tested air filters for dirt and airflow. This was for GM diesels. The result the AC Delco filtered best. Wasn't the best flowing, but the best filtration.
 

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Full-Race proved that the stock air box flowed very well. No need for a CAI on these trucks if you're not going to tune the engine. I would just get the AEM Dry drop in filter.
 

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I have a K&N drop in and have had no problems....
 

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I'm running the stock filter, but considering a washable drop in.
 

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A good scientifically backed test void of the subjective. It's a good read.

ISO 5011 Duramax Air Filter Test Report

(Arlen) SPICER said:
“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.

Hopefully the results of this test will do 2 things. Shed some light on the misleading marketing claims of some aftermarket manufacturers and/or give us new insight on products already on the market that are superior to our OE filter. I stand for truth and will eat my words publicly if my statements prove wrong. I appreciate all of the help and support that you members have offered in this project. It would simply be impossible without your help. A huge thanks to Ken at Testand for his willingness to take on this project. I would be spinning my wheels from here to eternity without his help… SPICER”
 
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