uberwgn

Dave, I wish you luck. K&N has stated many times that their air "filters" don't harm or foul MAFS.


FWIW: BOSCH MAFS re-sellers luv K&N air "filters"

EnkeiDynamics

Freakin A

My K&N filter is sitting on my door step at this moment for me to install...and my stock one is totally clogged....

What if you drive your car from work to home for a couple days (highway) w/o an air filter....how BAD actually is it. I know it could be potientially horrible results....

electromethod

I have used K&N's for years now....... no problems in any of my cars. I think some of the problem might be when people clean their filters and don't know how to properly oil them. My gas mileage actually went up, so I can't jump ship and start screaming about a coverup/conspiracy. Either way, I have been here long enough to be classified as an OG and I still don't have any oil residue after almost 5 years. I just checked the filter out a few days ago and the only disturbing thing was a small rodent had lodged itself in the duct and it's head had come off in the airbox. *shudder* That was a disgusting cleanup, even if it was "dried" like beef jerkey...

EnkeiDynamics

Still didn't answer my question lol

Althought cool story lol

SeaCoupe

Enkei,

you are better off running on the old clogged filter, than on none at all. The potential for catastrophic damage is just not worth the risk.

FWIW, I have run a K&N for at least 30k miles, and no problems.

E

nlpamg

that's ****ing gross...

electromethod

Well... that's the price I pay for living in the hill billy stix.

I should have taken a pic of it's little mummified skull.... but I am afraid you city slickers would have passed out .

electromethod

To answer your question, I wouldn't do it. The potential for bugs to you name it going there are high. There is a reason why they put the filter there..... just drop in a filter... dirty or clean...... either way it's better than no filter.

nlpamg

drexappeal

Cool! I wanna see what happened to it! As long as I don't have to touch the mf'er, I'm cool with looking at pics. Maybe post it on photobucket and send me the link.

ctC230K

I opened mine up yesterday and didn't notice any oil on inside but there was alot of black dusty crap on the outside and a ton of sand in the bottom of the airbox. i wiped it all out and put it back in.
urban myth.

lol you try it for a few thousand miles and then let us know how your engine swap goes!

Slater126

Figured I'd bump this thread. I went to put a Green filter in the car today and, low and behold, the thing doesn't fit correctly! It doesn't fit squarely in the plastic top like the stock one does and, if you place it on the lower portion of the air box, you can see that it leaves a small gap at the front or rear portion! Nice little pathway for grit to get into your supercharger.

I double checked the part number and it's the one recommended for the 2002-04 C32. Even says that on the boxes. Way to go Green!

I dropped the stock one back in and will get a new pair, from the MB dealer -- and do the job all over again. And FYI, the part number for the Fram filter is wrong for this car too. Fram Part Number CA8768 does NOT fit the C32 air box. It is way too large.

Just one more reason to ignore the "performance" filter hype. What a major waste of my f'ing time today.

splinter

I stand corrected. They do indeed serve their purpose.

My K&N’s resulted in a ~tenth and a MPH improvement at the dragstrip during back-to-back testing, when compared against fresh OE filters. Visualize a car-length margin versus the other guy during a 660’ sanctioned (off-highway) acceleration contest. Since I’d run out of otherwise seemingly cheap and easy HP increases, a pair from Amazon for only $47.76 were too enticing to dismiss.

Caveat regarding Green filters:


Photo credit Rafal


Photo credit Rafal


Photo credit dsb

Disclaimer: I have yet to submit another motor oil sample to Blackstone Laboratories for analysis since their installation. I’ll share before/after results in due course.

ctC230K

wow what a piece of crap. K&N FTW.

Slater126

Was that because you couldn't fit it in there normally and had to cram it down? As I said, I couldn't get mine to fit square. When I'd force it into the lid portion, the front and rear edges would rest on the plastic "lips" so it wouldn't sit flush. When I'd put it in the case, I got a little gap at the front or rear edge. No way I was taking the chance.

If I tried to cram the lid on there, it would have probably shoved the filter into the air box, like in your photograph.

SeaCoupe

I am in complete shock at how those two pieces just separated.

I know you are competent and thorough wrench. This can only be a manufacture defect.

When did this happen?

E

splinter

Thankfully, no. Those pictures were originally posted by E55 victims.

I never went with the Greens for just those reasons. Supposedly their latest renditions are new and improved. Who knows? Far be it for me to be a intake system debris test case. No disrespect intended toward any of our forum sponsors.

In the spirit of full disclosure, it’s only fair to remind the W203 contingent that the C32’s DME is signaled with a MAP, as opposed to the seemingly universal MAF.

Slater126

Thanks. My best guess is this was caused by fitment problems, and the owner simply forced the lid on when the filter wasn't truely square and flush and tore up the rubber sides in the process. In the pictured box, the filter at least goes all the way across. On mine, it didn't cover the full hole (maybe that was their "improvement?").

I intend no disrespect either but you'd think that for 100 bucks for two filters, they could at least make them fit correctly, sheesh.

C230 Sport Coup

Was that car length with a new, or used paper air filter?
Just put in a new one...oild one didn't look bad, but wtf,
they only cost 10-15 bucks, and it had been on there for 1,5 years.

I thought about y'all with your oily filters, soaking, cleaning the mess out of the intake, and re-oiling, and I quietly smiled to myself as I deposited the old filter in the gar-bage... :-) and wondered how the guy who bought my ITG off ebay is doing...

bronk1

sorry it is so late as i have only just become a member however i am not new to the forum i just enjoy reading all the posts. my opinion on the subject is as follows...

K&N give the statement you have all read probably more than once, they are talking about maf sensors under warrenty (see where i am going) your cars are not under any manufactureres warrenties still as they are to old so when the filter does cloud maf sensor who are you going to winge to??? K&N? i think not they said it does not affect the maf sensor. the only people who will be interested will be merc so that they can SELL you a new one as the could not care less what was at fault because your car is no longer under warrenty.

K&N think like this in my opinion... maybe 5 out of 100 cars are going to be under manufacturers warrenty and only 0.1 out of 100 will plague the maf sensor so what are the odds the plagued car being under warrenty

this is the first thread in 3 years which i actually made me sign up

happy new year pardon thespelling mistakes

splinter

Picked up ~8 RWHP fitting new intake plumbing, replete with OE airbox and no aftermarket oiled cotton gauze filter.

Happy modding in '13! :zoom:

bronk1

looks quite good were did uou get it? im goin to set about making a stainless induction kit today just trying to decide which filter to use, the get it mapped in the new year