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  #1  
Old 08-16-2014, 12:34 PM
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Any benefit to K&N Filters on a stock X5M?

I was looking over the wives car today and pulled the air filters. They definitely need to be replaced and was curious if the K&N replacements offer any benefit. I've seen that on some stock cars they actually cause a leaner AF Mixture causing CEL's and whatnot but i was curious if anyone here had any experience or insight.

Also...what are the white filters behind the air filters? They also looked pretty cruddy.

Thanks in advance.
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Old 08-16-2014, 01:54 PM
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Quote:
Originally Posted by Rez90 View Post
I was looking over the wives car today and pulled the air filters. They definitely need to be replaced and was curious if the K&N replacements offer any benefit. I've seen that on some stock cars they actually cause a leaner AF Mixture causing CEL's and whatnot but i was curious if anyone here had any experience or insight.

Also...what are the white filters behind the air filters? They also looked pretty cruddy.

Thanks in advance.
Benefits:
Better air flow
lifetime air filter

There will be no lights, that's silly.

But I would recommend you pull the carbon filters which are a real hp sucker while you are installing your K&Ns.
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Old 08-16-2014, 03:05 PM
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Quote:
Originally Posted by wallyx5 View Post
Benefits:
Better air flow
lifetime air filter

There will be no lights, that's silly.

But I would recommend you pull the carbon filters which are a real hp sucker while you are installing your K&Ns.
Do the carbon filters serve any viable purpose?

Also...is there a trick to getting them out or do you just yank....
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Old 08-16-2014, 10:32 PM
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Read my thread, there is even pictures.
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2010 X5M /// R63 AMG...Wifey's 540HP Family Hualer

2001 X5 3.0i Sport 335,448 miles & counting...

SMG M3 Steering wheel
E46 Stainless Racing Headers
4.6is Exhaust
Turner Pulleys
Afe Intake
Brembo drilled rotors
PowerFlex Bushings

Hualingan
30mm H&R Spacers rear
20mm H&R Spacers front

Bavarian Autosport High-Performance Coils
Active Autowerke's Performance Software
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  #5  
Old 08-19-2014, 09:21 PM
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Well...pulled the stock filters tonight along with the carbon filters and installed the K&N's.

This could be due to the stock filters being FILTHY but there is definitely a difference. The truck is snottier and more responsive. There's no doubt about it.

I always thought the truck felt a little choked and i even mentioned to my mechanic at my end of warranty check.

Granted we're not talking a huge difference at all...but the truck definitely woke up from the change. would a change of stock filters have done the same....maybe. But in whatever case i'm very happy.

I took the truck for a spin around the block and all i could think to myself after i let off the gas every time was...."Now the truck feels like it needs a tune..."

The bug.....has bitten.

Someone talk me out of calling Velos tomorrow......
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Old 08-20-2014, 12:06 AM
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K&Ns are a total scam.

It has been established, yet people drink the cool aid
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Old 08-20-2014, 01:42 AM
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This might help. http://www.xoutpost.com/bmw-sav-foru...ally-work.html
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