mickey13

Did we ever find fast-flow filters or is everyone just sticking with OEM.

K&N=bad?

DRBC43AMG

This is a long going debate.... with plenty of pros and cons.

I have had fast flow filters both K&N and now Green for years on nearly all my vehicles with never a problem. The secret is to apply a very thin spray of oil after having cleaned them. Over oiling will indeed kill the MAF. Clean them at least x1 year regardless of distance driven. If you live in a sandy desert type area, then a more regular cleaning would be a good idea.
The OEM filters do the job perfectly but the fast flow ones will give you a touch more intake noise. With the big air-box it is very much more noticeable

mickey13

Always very jealous of your big box, you got the bigger 4" right?

cm60k

IMO;-

not recommended to go with oily filters,

we have very sensitive MAF film, that will affected during hot oil sneaks there,,

moreover; when oil mixed with dust & Humidity, the vent rooms will clogged, that will definitely causes bad reflect to the air inlet & density..!!?!?!

-;ZAYED;-

W202AMG

And that is all theyll give you.

There is no power advantage, however there is a disadvantage in that the filtering is not as fine, and dust will go through.

The K&N is fine for a pre-filter ( not that youd use one on a road car ) , but there is no need for it as a primary filter.

DRBC43AMG

It's 8cm thick at the air-box exit over the MAF. So that's 3.1496 inches so it's not the 4" one. It could be that the 4" we here was a prototype and a bit too high to fit without rubbing. I believe George cleared this question when answering one of Kowalski's multiple queries...

eFifty5AMG

aFe 31-10084 filters in a custom airbox/no maf mesh at all, not one issue.

PJmak

I have a set of used(very good shape) K&N filters that I dont need. Shoot me an offer if you want them

Dziner82

i have K&N filters in my C43 and CLK55. been 4 years in the C43 now, and cleaned 2x i think, no issues at all. only 1 year in the CLK55, haven't cleaned yet (i only drive the cars in the warm season and 5000 miles or less a year so not much use.

i have no idea how people have problems with K&N, im guessing a few people just greatly over oiled them when cleaning??

DRBC43AMG

Exact!

W202AMG

No, the issue with them is they do not filter as fine as paper filters.

DRBC43AMG

Yeah, I guess if you live in a very dry and dusty area, the use of OEM filters might be preferable for optimum air filtration.

cm60k

+10000000000

-;ZAYED;-

speed43

All my modded air boxes are about the same size. Maybe 1/4 inch difference from each one. I only made ONE lower than the rest. I have a version 2 air box now. Made the first one for pjmack which he should receive today or tomorrow.

benzslo

Oiled filters kill the maf period, can't tell you how many I've replaced with k&n filters.

eFifty5AMG

Trust benzslo. I keep hearing oil is the enemy.. that is why I chose the aFe Pro Dry S filters. Mann or aFe for me- No oil no problems.

nkctb7

I'm running Green Filters and I couldn't be any happier.

DRBC43AMG

Like me

nkctb7

benzslo

I run those afe filters also, pretty good alternative to stock replacement.

mickey13

so if i want to steer clear of oil, looks like oem, afe or green? any other options out there?

eFifty5AMG

Green filters use oil. I think aFe & Mann are your only oil-free solutions.

nkctb7

Green Filters=Nothing like heavily oiled K&N and won't set off maf

• What makes Green Filter oil different from other brands?
Green High Performance Air Filters come pretreated with a specially formulated dirt-trapping oil. Our proprietary lightweight, synthetic Green Filter oil is designed to not damage any vehicle sensors.
This oil creates a positive (+) magnetic charge, or ionic bond, with the filter's stainless steel mesh. The positive charge attracts the negatively (-) charged dust particles entering the filter, causing them to cling to the steel mesh and allowing the cotton to remain clear for maximum air flow.
Green Filter oil also contains a swelling additive for the cotton filtration media. This causes the cotton fibers to swell, which allows the filtration media to collect the very small dirt particles (down to 5 microns) that could otherwise harm your engine.

eFifty5AMG

http://www.greenfilterusa.com/filter...aintenance.php

nkctb7

My bad! I did correct it before you quoted me. Oil is so light it appears oil less!