: *Is the K&N Drop in air filter really that bad?



austin
07-16-13, 07:50 PM
I was looking at changing the stock paper air filter over to a K&N drop in to keep things stealth.. I was not expecting miracles, perhaps slightly better flow and a realistic 1hp or 2 from being a tad leaner from flowing more air.. Almost every dyno review I have come across on YouTube and other forums are showing a slight loss in TRQ and HP when changing over from the stock paper filter to the K&N oiled drop in filter.. I was completely shocked.. I would have expected the K&N to be at least slightly better.. These filters use to be the norm back in the day.. One of the first mods folks would do.. Perhaps the V and other cars just don't like an oiled filter? Anyone here have first hand experience with this filter? I rather hear the truth from you guys.. The part number is 33-2411.

MoistCabbage
07-16-13, 09:41 PM
They let more dirt by, and pack up 3 times as fast as a paper element filter. You're not going to gain any measurable power either. Don't bother.

austin
07-16-13, 09:49 PM
They let more dirt by, and pack up 3 times as fast as a paper element filter. You're not going to gain any measurable power either. Don't bother.

What a shame... Too bad, they were big years back, they should update their filtration method.

PNBLWZD
07-16-13, 11:11 PM
This looks like the same filter than Lingenfelter offers in the various upgrade packages, but it is combined with cutting away a lot of the lower airbox IIRC.

austin
07-17-13, 08:30 AM
This looks like the same filter than Lingenfelter offers in the various upgrade packages, but it is combined with cutting away a lot of the lower airbox IIRC.

WoW.... Talk about mis-leading folks... There claiming the K&N filter they sell alone (not their CAI package) is good for 13hp from their own testing.

http://www.lingenfelter.com/mm5/merchant.mvc?Screen=PROD&Store_Code=LPE&Product_Code=33-2411&Category_Code=C67

HUGN*RDS
07-17-13, 09:50 AM
WoW.... Talk about mis-leading folks... There claiming the K&N filter they sell alone (not their CAI package) is good for 13hp from their own testing.

http://www.lingenfelter.com/mm5/merchant.mvc?Screen=PROD&Store_Code=LPE&Product_Code=33-2411&Category_Code=C67
I think everybody in this thread agrees that the filter does indeed have less filtering, which in turn reduced restrictions and can help the engine breathe better. I would guess they are correct with that HP gain but they may be letting in some more dirt.

Chrispy
07-17-13, 09:58 AM
The Drop in will pick up 6-7RWHP by itself, with the airbox cut out it picks up more. (11-12RWHP)

The Airaid with Drop in K&N 1044 filter picks up a ton. I've gone 11.80s 120mph with DR's and Airaid as only mods in my six speed wagon.

Gary Wells
07-17-13, 01:34 PM
Keep in mind that these are claims, other than the actual back to back test by user name 'newcadman."


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MoistCabbage
07-17-13, 02:04 PM
As far as "breathing better" goes, has anyone ever put a vacuum gauge between the stock filter and TB, and done a WOT run? I'm betting there isn't much restriction to begin with anyway.