K&N vs OEM air filter testing
- Thread starter FoMoCoSHO
- Start date
FoMoCoSHO said:
Of course. I don't dispute the filtration aspects of the article. But my point is that an OEM/replacement filter MIGHT NOT flow enough for the engine, especially a modified one. This article states that they do, but they didn't test them with enough flow. Maybe 350 CFM is enough for a little Nissan motor, but it's not enough for my EcoBoost. Most of us here are interested in getting more out of our cars than the conservative manufacturers release it with. You're always going to get some dirt, you just have to decide how much is too much. Most of it will go out the exhaust anyway.
FWIW, I don't use a K&N filter. I use an AEM.
Well said hawkeye! In short, a solid piece of metal will allow zero dirt to flow through it...or any air. No filter will allow 100% dirt and 100% air.
Between those two things is a sliding scale between dirt trapping and air flow. Paper filters trap more dirt than gauze type filters at the expense of also flowing less air.
Given enough underhood space, it's hard to beat a giant paper filter with tons of surface area. If you're working within the confines of the stock airbox and want more flow, there's not much you can do except switch to a gauze style filter of your choice and accept that it's going to pass more dirt.
Generally speaking, the worst option is to switch to a small gauze filter. Those that remove their airbox and install a small K&N type cone filter have gone two steps back.
Between those two things is a sliding scale between dirt trapping and air flow. Paper filters trap more dirt than gauze type filters at the expense of also flowing less air.
Given enough underhood space, it's hard to beat a giant paper filter with tons of surface area. If you're working within the confines of the stock airbox and want more flow, there's not much you can do except switch to a gauze style filter of your choice and accept that it's going to pass more dirt.
Generally speaking, the worst option is to switch to a small gauze filter. Those that remove their airbox and install a small K&N type cone filter have gone two steps back.
MightBeASynth
New member
Used oil filters for years and can attest to the extra dirt getting sucked in even when properly oiled, after enough time youll notice a fine layer of dirt accumulating inside the intake piping and this was on a v6 NA pushrod.
For the EB I tried to split the difference going for a paper style cone filter to maximize surface area and filtration.
For the EB I tried to split the difference going for a paper style cone filter to maximize surface area and filtration.
Depending on the year the Duramax platform used for the test puts down 500-765 lb ft of torque.hawkeye93 said:FoMoCoSHO said:
Of course. I don't dispute the filtration aspects of the article. But my point is that an OEM/replacement filter MIGHT NOT flow enough for the engine, especially a modified one. This article states that they do, but they didn't test them with enough flow. Maybe 350 CFM is enough for a little Nissan motor, but it's not enough for my EcoBoost. Most of us here are interested in getting more out of our cars than the conservative manufacturers release it with. You're always going to get some dirt, you just have to decide how much is too much. Most of it will go out the exhaust anyway.
FWIW, I don't use a K&N filter. I use an AEM.
If paper flows enough for the Duramax I'm not concerned with flow on the Ecoboost.
The difference in initial flow is .06 PSI.
My tune is hotter than AJP's which put down 527 wtq and I'm definitely putting the paper filter back in. I suspect there will be no discernible difference in butt dyno or data log. If I can make it to the track Thursday we will have some numbers to compare.
I was reading on Bitog last night and someone commented that all it takes is 1 tsp of dirt to kill an engine.
Right or wrong that gave me pause and I'm going to do a little investigating.
There is a whole section on the Bitog forums regarding air filtration if anybody wants to look into the matter further.
Looking back over my datalogs, I used up about 150 cfm of air under moderate-heavy acceleration getting up to 55 from a standing start.
http://www.superchevy.com/how-to/4496-500-hp-na-chevrolet-lt1-engine/
http://www.superchevy.com/how-to/4496-500-hp-na-chevrolet-lt1-engine/
Here is a good video from Mackuloko. Z [url=http://www.youtube.com/watch?v=NJKlb61_kXU#]! No longer available]! No longer available
I found an article where they used Green filters on the EB for the Daytona testing/race. Granted they probably tore the engine down after the checkered flag but i hope there was some good reason they chose that filter (other than Green offering $$$ for Ford to use them).
sent from my speak n' spell using tin cans and string
sent from my speak n' spell using tin cans and string
paokara777
New member
According to this, Green filters flow better than K&Ns ?
Did they sabotage this test xD
https://www.youtube.com/watch?v=cY7fSPvI8bY
Did they sabotage this test xD
https://www.youtube.com/watch?v=cY7fSPvI8bY
