K&N for my AMG

[beaRS]

I though I'd fit a pair of K&N replacement panel filters to my W208 CLK-55 AMG instead of the OE MB part.

K&N do not list one for this particular car - so I thought I'd measure the original filters and cross referance with K&N's measurements list. Could I get the air filter housing off? not a chance!

Does any one know either; (a) how to open the air filter housing? or (b) what the K&N equivelent part number is?

I searched old posts and found the OE part number as 'WA 104 094 01 04' (thanks Ian B Walker).

K&N do list a pair of panel filters for a CL55 AMG which is 348mm x 132mm - could this be the right one for my CLK?

Any help would be appreciated

 

[Will]

Hi beaRS,

K&N filters are not recommended by most people for your car, the MAF sensors are very delicate and can become ruined as they suck tiny particles of oil out of the filter through the intake. An expensive fix for your car as IIRC it has two MAF sensors, probably about £300 each from MB at a guess

Personally, I'd fit new OEM air filters to your car, I don't think they're going to be restricting the performance of the engine.

As an alternative, I think Green Cotton air filters have been used by a few people on here with no apparant side effects

Will

 

[recycled]

please do not. as you MAF will die. with that V8 you have more power than you will ever need legally

 

[beaRS]

Thanks Will,

don't supose you know a Green part number do you?

 

[Will]

I don't have any green part numbers, but I'm sure if you can find a supplier they'll have a list.

I'll try a google for you.

Will

 

[Will]

Bingo:

http://www.green-filter.co.uk/product_info.php?cPath=812_984_985&products_id=203766

But - I would still use an MB part, I can't see the benefit myself really. Better off sticking to OEM and getting a remap or something if you want a little more power!

Will

 

[television]

On most forums throughout the world the general consensus is do not do it owing to the oil-MAS issue,, MB filters are among the best in the world

 

[Shude]

If you have forced induction then changing to a lesser-restriction airfilter can make a big difference. Your car has a fairly unstressed V8 so it will make less difference. What you would get from a green cotton air filter is a bit more of a growl from the engine and slightly better throttle response.

 

[C240Sport97]

I had the air filters (there are 2) changed on my CLK55 with MB parts (about £100) in addition to spark plugs etc etc. The amount of crap on the air filter housing was shocking, as was the state of the filters -- the filters were a bit old, 5 years 9 months and 48k miles.

After that, it was like a new car.

Stick with MB parts, best not to mess with non AMG stuff.

 

[GrahamC230K]

If you must change it, I'd go Green Cotton or ITG.

Noise the filter makes and perhaps a better response or a percieved better response might be had.

Forced induction or not I don't see an increase in power there alone.

Pedrsonally I'd stick to MB paper filters and perhaps change them more frequently than the mammoth mileage MB recommend.

 

[Shude]

Forced induction or not I don't see an increase in power there alone.

The workshop that fitted my winter tyres a year ago now has a dyno. This place specialises in boy racer car mods and... motorhomes!

I was thinking of getting my car tested on their dyno with no filter, green cotton and oem filter to see if it makes any difference.

 

[GrahamC230K]

I am able to measure the air flowing past my MAS sensor. Car tuned to around ~27% increase in peak power and I still use the stock paper filter. The MAS flows a LOT more air then it did before tuning. Changing the filter, makes no odds. Similarly equipped others have tried and tested it. Response yes perhaps but that's subjective and the noise difference clouds your senses. Air flow can be measured and has been.

It could be MB filters are more restrictive, but I doubt it. I just don't see a car intaking a greater volume of air just because the filter is changed.

What you will get with an intercooled car on a dyno is heatsoak and so repeated testing will just give you deteriating results.

 

[television]

I am able to measure the air flowing past my MAS sensor. Car tuned to around ~27% increase in peak power and I still use the stock paper filter. The MAS flows a LOT more air then it did before tuning. Changing the filter, makes no odds. Similarly equipped others have tried and tested it. Response yes perhaps but that's subjective and the noise difference clouds your senses. Air flow can be measured and has been.

It could be MB filters are more restrictive, but I doubt it. I just don't see a car intaking a greater volume of air just because the filter is changed.

What you will get with an intercooled car on a dyno is heatsoak and so repeated testing will just give you deteriating results.

Is there that much difference on the green filter when used on a diesel that has a much higher air flow than a petrol, or is it minimal on both

 

[KLP 92]

I have also heard about mas failures with oil based filters, but K&N have released an official statement:

http://www.knfilters.com/news/news.aspx?ID=422

http://www.knfilters.com/MAF/massair.htm

 

[GazCaff]

I have also heard about mas failures with oil based filters, but K&N have released an official statement:

http://www.knfilters.com/news/news.aspx?ID=422

http://www.knfilters.com/MAF/massair.htm

What strikes me is that K&N put the word "Myth" in inverted commas. I'd happily use a K&N on my diesel. If I had a petrol model I certainly wouldn't.

 

[DansSlk]

I'd stay away from the K&N's also, I've seen the results from fitting them.

About the Green's to be honest its down to you, I've seen dyno results of about 10bhp on a N/A 113E55EVO but i fully expect that 99% of the time all your going to get is perhaps a slightly more lively throttle and a tad extra growl as the others have already mentioned.

Best thing you can do as far as I'm concerned is to buy a set and try them, if you like them great if you don't no worries just pop the MB's back in.

 

[Bazzle]

I look at the changeing of filters another way.
The standard MB filters flow enough air to run unrestricted vehicles into very high top speeds with no mixture issues
If they can supply enough air at 160/180mph then you are not going to beat that.
k and N are in the business of selling filters, I would sell you mine if I made them

Bazzle

 

[television]

I look at the changeing of filters another way.
The standard MB filters flow enough air to run unrestricted vehicles into very high top speeds with no mixture issues
If they can supply enough air at 160/180mph then you are not going to beat that.
k and N are in the business of selling filters, I would sell you mine if I made them

Bazzle

Thank you Bazzle, and I understand too that the oil filters are like no others made too

 

[DansSlk]

I part buy into that statement, i could say the same about the exhaust manifold or the cats they wont kill the engine at high RPM's (not so much the wheel speed) but they are not helping it either and its proven that properly designed exhaust headers and/or sport cats create a noticeable power increase.

I still stick to my previous post and those made by others that filters are mostly only going to give a slight increase in noise and perhaps a little faster response to the throttle if your lucky but as i said before i have seen dyno results that show a bhp increase with just a filter swap (only one set of results mind you).

If I'm perfectly honest i don't buy into any of the cheap and easy mod's especially not for N/A Petrol, anything short of a few grands worth of hardware is only going to buy you snake oil.

 

[kth286]

I think you will find that high flow air filters are fitted as standard.

Look up the part numbers on Russian web site.