K&N Filters Installed
11-16-2014, 11:01 AM
#26
Super Member
11-16-2014, 11:39 AM
#27
Senior Member
11-16-2014, 01:19 PM
#28
11-16-2014, 01:26 PM
#29
Paper is solid, a pressed solid, not mesh like the kn, woven fibers
So filtration is by diffusion, not like a sieve
Think of a membrane vs a screen
Particles smaller than the mesh opening will get thru
My post filter airboxes were always cleaner with an oem filter than a kn
With the kn there would be some grit, which means some was passed thru the engine
So filtration is by diffusion, not like a sieve
Think of a membrane vs a screen
Particles smaller than the mesh opening will get thru
My post filter airboxes were always cleaner with an oem filter than a kn
With the kn there would be some grit, which means some was passed thru the engine
11-16-2014, 02:06 PM
#30
MBWorld Fanatic!
Join Date: Nov 2009
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2010 Irridium Silver MB C63 AMG Sedan
I used k&n in my rs4 after seeing some dyno results from european car
Picked up 7-8 hp and a tenth or so in a 3000 to 8000 rpm timed in gear run
This can't be felt on a 420 hp engine
Also seemed to improve mpg a bit
Honestly the main advantage is cost over the lifetime of the vehicle and less crap in landfills
Moot for gas suckers like these lol
I have reservations about filtration efficiency so I stick with oem paper
But really no difference, personal choice
On my recent 5800 mile trip I averaged 20.5 avg speed 55 mph
Picked up 7-8 hp and a tenth or so in a 3000 to 8000 rpm timed in gear run
This can't be felt on a 420 hp engine
Also seemed to improve mpg a bit
Honestly the main advantage is cost over the lifetime of the vehicle and less crap in landfills
Moot for gas suckers like these lol
I have reservations about filtration efficiency so I stick with oem paper
But really no difference, personal choice
On my recent 5800 mile trip I averaged 20.5 avg speed 55 mph
11-17-2014, 01:58 PM
#31
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Join Date: Sep 2014
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C63
Iam a fan of K & N. I installed the filters on all my cars. However, when I installed the K & N on my c63, the engine light came on ( code is Bank 1 running too lean). Once I switched it back to my oem filters, reset it. Engine light never come back on (after 1000miles)
