K&N Air Filter?

[bmwstve]

Planning to change the air filter of my X6 35i to

K&N Drop in filters.

Are there any real difference in performance?
I've read it increases throttle response, is that true?

Thanks

[infamousdiz]

no air filter will add any real difference, I have K/N in mine due to the fact the factory one was dirty and they told me it wasn't due for a change.

[SteveMD]

K and N filters are snake oil.

They made their name before the internet came around to expose them. They just don't work their magic on modern engines.

Save your money.

Cites:

http://www.nicoclub.com/archives/kn-vs-oem-filter.html
http://www.svtperformance.com/forums...nt-Filter-Test

[HPIA4v2]

Another thing to be careful of any "wet" air-filter is once you clean it, make sure only use enough oil. I've seen so many instances MAF gets killed by excessive oil.

BTW, I used K&N chemical once to clean the air-filter and spray some on concrete driveway, well it eats some of the concrete, so it's very strong chemical, so I go back to "dry" air filter now.