Air filter test
Thread Starter
Joined: May 2003
Posts: 20,904
Likes: 508
From: California
Air filter test
This is way too much info to load here, see the results for all the gritty details. 
Of course, this is one persons findings and since this is your car, you choose how you want to interpret the data. I reached a similar conclusion after oil analysis and high silicone readings.
http://home.usadatanet.net/~jbplock/ISO5011/SPICER.htm
Of course, this is one persons findings and since this is your car, you choose how you want to interpret the data. I reached a similar conclusion after oil analysis and high silicone readings.
http://home.usadatanet.net/~jbplock/ISO5011/SPICER.htm
Lexus Fanatic
Joined: Oct 2003
Posts: 94,574
Likes: 265
From: Virginia/D.C. suburbs
Originally Posted by SC400-V8
K&N 
I will always stick to the stock filter box and a toyota filter.
I will always stick to the stock filter box and a toyota filter.
While not mandatory, it is always best to use factory parts while the vehicle is under warranty. I do so myself.....the only exception being Castrol dino 5W-30 oil.
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Zombie Slayer
Joined: May 2004
Posts: 6,053
Likes: 3
From: East Bumble F, NJ
Originally Posted by Stage3
So how is it that K&N claims that they will increase HP with a drop in filter? Seems to me that it may be because it lets more air (and thus dirt) in. VERY disconcernig...
This quote from the test article basically explains this.
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.
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I don't by it. Look at this comment. from your link.
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
Note: "Our product" AC Delco is an affiliate of GM and wants you to stick with there stuff. I use k&N and did not notice any decrease in power or dirt in the throttle body. Matter of fact, it keeps my throttle body cleaner than stock.
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
Note: "Our product" AC Delco is an affiliate of GM and wants you to stick with there stuff. I use k&N and did not notice any decrease in power or dirt in the throttle body. Matter of fact, it keeps my throttle body cleaner than stock.
Speaks French in Russian
Joined: Oct 2002
Posts: 13,397
Likes: 100
From: What is G?
Well I guess I need to change out my K&N filter. I havent noticed any power gains(more than likely wont feel it anyway), but I have noticed an increase in intake noise with a simple panel filter change out on my 97 Maxima. Thats about it.
Zombie Slayer
Joined: May 2004
Posts: 6,053
Likes: 3
From: East Bumble F, NJ
Originally Posted by DASHOCKER
I don't by it. Look at this comment. from your link.
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
Note: "Our product" AC Delco is an affiliate of GM and wants you to stick with there stuff. I use k&N and did not notice any decrease in power or dirt in the throttle body. Matter of fact, it keeps my throttle body cleaner than stock.
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
Note: "Our product" AC Delco is an affiliate of GM and wants you to stick with there stuff. I use k&N and did not notice any decrease in power or dirt in the throttle body. Matter of fact, it keeps my throttle body cleaner than stock.
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