K And N Air Filter

[2slickg35]

I just recently installed a new K and N air filter at 147,xxx miles. Previous filter was a Fram paper filter. When I accelerate with the new K And N filter, I hear a small noise like air sucking into the engine, similar to that of a turbo. Is it normal since the K and N air filter is less restrictive?

[4DGS]

Yes, kind of a squealing noise over 3500rpm?

[Jeff92se]

It's normal. But it will go away after a few days/1 week as the filter gets slightly dirty.

[azt108]

K&n ftw!

[2slickg35]

Originally Posted by 4DGS

Yes, kind of a squealing noise over 3500rpm?

Yea, its around 3000 rpm. It seems the car is performing a bit better than the crappy paper filter has. Like, it picks up acceleration a bit better than usual. Just could not stand having a crappy filter in a nice car.

[Mustang5L5]

Just make sure you don't over oil it and add checking the MAF wiring for oil accumulation to the list of maintainence items. I've seen em gunk up over time.


K&N's are good...but I still rock a Fram paper filter.

[Jeff92se]

Originally Posted by 2slickg35

Yea, its around 3000 rpm. It seems the car is performing a bit better than the crappy paper filter has. Like, it picks up acceleration a bit better than usual. Just could not stand having a crappy filter in a nice car.

Oem paper flows well and filters well when they aren't dirty. Once their service life is done, they start to get restrictive.

[B T]

Had mine since April, never stopped...

[6MTKeith]

I run a k&n in everything I own and have owned, but there is no way a k&n filters nearly as well as a fresh paper element. I sell k&ns too, and every single one i've looked through has at least a few massive (in relation to the size of the holes it should have) holes where nasty stuff can come through. Just a rant... K&n oil filters however, are top notch.

[Mustang5L5]

Originally Posted by 6MTKeith

I run a k&n in everything I own and have owned, but there is no way a k&n filters nearly as well as a fresh paper element. I sell k&ns too, and every single one i've looked through has at least a few massive (in relation to the size of the holes it should have) holes where nasty stuff can come through. Just a rant... K&n oil filters however, are top notch.

That's where the oil comes in. It's supposed to trap whatever particles make it through.

But you are right. I've seen arguements against K&N's for that exact reason. One of the reasons why I don't run one in my G35

[ttrank]

Dryflow FTW!