K&N Drop-in Filter

[powerstroker363]

I would like to hear on what your take is on the K&N Filters vs Stock Filter? Yes or No

I'm thinking of putting one in car that has the Stage 2 Malone Tune and turbo back exhaust. I can't make up my mind. Is anyone out there running a K&N drop-in?

 

[psd1]

No. Not many fans of K&N on these turbo cars.

 

[JSWTDI09]

First, avoid oiled filters. If it is a non oiled filter, it might be safe. However the stock air filter is excellent and most high flow filters achieve that "high flow" by filtering less. In other words, there is a very good chance that more fine particles of dust (etc.) will get through the filter and into your engine. I would stick with the stock filter until you have evidence that air flow is the limiting factor in any desired power increase.

Have Fun!

Don

 

[powerstroker363]

That's kind of what I was thinking. I knew there was something about oiled filters are bad for these cars. Thanks

 

[JSWTDI09]

I knew there was something about oiled filters are bad for these cars. Thanks

In my opinion, the biggest problem with oiled filters is that most people over oil them. The excess oil gets sucked through the filter and it fouls the MAF sensor. If you used minimal oil, it might be OK.
Oil issues aside the issue with most filters is that to increase the flow, you really only have 2 choices. First you can make more holes for the air (or whatever) to pass through, or (second) you can make bigger holes for the air to pass through. More holes is the way VW chose (try unfolding
the paper element and see how long it is). However, it is cheaper and easier to make bigger holes, so guess how most aftermarket filter makers do it.

Have Fun!

Don

 

[jrm]

I have rebuilt over 5 rigs due to dust and sand getting past a K&N filter. 1 was a $7K ford 6.0 powerstroke complete rebuild, others just bikes and quads....
the turbo puts out the same max boost no matter what filter is used

 

[Brian's96TDIPASSAT]

I have rebuilt over 5 rigs due to dust and sand getting past a K&N filter. 1 was a $7K ford 6.0 powerstroke complete rebuild, others just bikes and quads....
the turbo puts out the same max boost no matter what filter is used

I've seen tons of claims related to these type's of filters on diesels in Dodge's, Fords and Chevy, DON"T DO IT with a diesel. I've seen impellers almost worn so thin and damaged from dirt getting by these. Gassers, even turbo gasser's, okay if you don't over-oil but not a number 2 burner

 

[jrm]

even properly cleaned and washed, and correctly spray oiled banshee's and CRF's ingest tons of sand. The carb slide was so full of sand on my friends Banshee that one carb stuck 1/4 way open. he is now on his last overbore before a new sleeve is required.