K&N cold air intake

[kayger12]

Here you go:

http://www.e46fanatics.com/forum/sho...d.php?t=507315

[ZHP-FTW]

Interesting... I guess a few more hp than I thought.....

[antcamp]

just put my k & n intake on my zhp today and it sounds sick. i love it so far (highway, city, revving in my driveway at 1am, all of the above). I definitely feel a different pick up in higher rpms and the chirp/whistle tone it gives off is worth it to me

[Johal E32]

i have the k&n. It came with car, but I think it makes a VERY minimal difference. It's more for the sake of cleaning rather than changing your air-filter. If it does really add power than that's nice, since it will make up for some or all those horspeowers that have been lost since new

[HokieZHP]

Johal, do you have the K&N filter or the entire intake system?

I think antcamp got the entire system which would definitely make at least a sound difference.

[Johal E32]

oh I'm so sorry, I forgot to mention I have the "drop in" intake. I'm sure the entire system would make some sound difference in the higher rpm's, and probably add 3 or 4 hp

[HokieZHP]

I had the drop in filter in my stock box before going to the aFe. I didn't really notice any gains or sound difference but it was going to be easier to service. I only ran it for maybe 500 miles. Now it's sitting in the aFe box with the rest of my stock intake.

[zj96sc]

I don't like oiled filters. They make a mess, they're a pain to clean, and they don't filter as well as paper.

I also don't think an oil based filter in front of a MAF sensor is a good idea. If the BMW performance intake has dyno proven gains of 3-6 HP, i'm not sure I buy K&Ns claims of 10.

Paper for me all day long. On my 7.3L diesel I run the "BFAF" or big fawking air filter, its an enormous generic wix filter with a huge surface area but paper element. I do this because diesels and turbo'ed engines are that much more sensitive to particulates and depend on very clean air and k&ns just don't filter well enough.

[S85FTW]

I have an aem dry filter (cone non oiled) with a Racing Dynamics heat shield, with this set up you get the benefit and sound of the CAI minus the oil and maf issues later on. Coupled with my headers I am sure I would dyno some pretty good gains.