[F32_435xi]

Hey, so I have a F32 435i xdrive and I was wondering if a K&N engine air filter would be better than an OEM engine air filter. I’ve read a lot of mixed reviews and from the reading I did on the E90 forum, it’s just 50/50. I personally am looking to increase the performance of the car so I don’t know which one would be better. Does anyone have any knowledge on this? Thanks in advance. (I’m most likely going to be getting a cold air intake, I would appreciate it a lot if you guys could recommend some good, reputable brands)

[Ishan99]

I just bought a K&N air filter and I'm putting it in my car tomorrow. I'll let you know what it's like!

[fantanas]

Make sure you clean the MAF sensor regularly. The oils in these things are pretty bad.

In terms of performance gains you won't see any. Maybe some more intake noise...

I had it in my previous car because I found one cheaper than the OEM filter, but I went and replaced it soon. I feel better if I know there is no oil flying in my engine cramming my sensors

[Busa1]

Originally Posted by F32_435xi

Hey, so I have a F32 435i xdrive and I was wondering if a K&N engine air filter would be better than an OEM engine air filter. I’ve read a lot of mixed reviews and from the reading I did on the E90 forum, it’s just 50/50. I personally am looking to increase the performance of the car so I don’t know which one would be better. Does anyone have any knowledge on this? Thanks in advance. (I’m most likely going to be getting a cold air intake, I would appreciate it a lot if you guys could recommend some good, reputable brands)

A cold air intake is more for sound then anything else. I went with the AFE Power Pro Dry S air filter which doesn't use any oil. Ive read that the oiled ones can sometimes cause issues.

[sspade]

Don't waste your money on a CAI. A quality drop in is going to give you the exact same benefits. That would be a louder air intake swoosh and maybe a couple ponies.

I personally run a KN filter with no issue. Just make sure to let it dry in the sun for a couple hours before re installing. If you think thats too much trouble, go with a dry type filter.

At the end of the day... an OEM paper filter isnt a bad idea either. Just depends if you want to keeo buying those or clean the aftermarket once a year. Comes down to preference mostly.

[wdeerfield]

i'd recommend a dry filter over the oily k&n.

[Infamous039]

Originally Posted by F32_435xi

Hey, so I have a F32 435i xdrive and I was wondering if a K&N engine air filter would be better than an OEM engine air filter. I’ve read a lot of mixed reviews and from the reading I did on the E90 forum, it’s just 50/50. I personally am looking to increase the performance of the car so I don’t know which one would be better. Does anyone have any knowledge on this? Thanks in advance. (I’m most likely going to be getting a cold air intake, I would appreciate it a lot if you guys could recommend some good, reputable brands)

I have a CTS turbo intake setup for your car if your interested