K&N Filters - Mercedes-Benz Forum
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post #1 of 13 Old 06-30-2004, 08:44 AM Thread Starter
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K&N Filters

Hey does anyone have expirence with K&N filters for a 300SD, or any diesel? Do they help to improve performence that much? thanks for your responses.
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post #2 of 13 Old 07-01-2004, 07:16 AM
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No firsthand experience with diesels, but I wouldn't recommend it. K&N power increases are negliable at best; you wouldn't feel anything but the placebo effect. It will make your intake noise a tiny biit raspier but that's really about it. On late model MBs the oil from the filters is a common cause of airmass sensor failure.



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post #3 of 13 Old 07-15-2004, 08:32 AM
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How about for 300ce "92 with the 24v engin.. i am thinking about to get the k&n filter...
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post #4 of 13 Old 07-19-2004, 07:38 AM
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It is unlikely there will be any power gains with the K&N, but your wallet will be lighter.



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post #5 of 13 Old 07-19-2004, 07:50 AM
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A word of caution! Using a K&N filter on a car with a Mass Air Sensor can do damage to the sensor. Not a good thing!
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post #6 of 13 Old 06-08-2013, 05:40 AM
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don't over oil your filter,and your mass sensor will be fine,running K,an Ns 3 years

99 s320 359hp with nitrous wet shot 125,cold air,modified grill,and hood for airflow,borla exhaust,no cats,denso plugs.
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post #7 of 13 Old 07-16-2013, 09:36 PM
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Deja vu

This is the 4th K&N thread I've seen. Flat earth folk saying the K&N's will ruin your car and guys actually running them answering back.

Do they work?
Yes they filter air very effectively.

Do they add much Torque or HP or increase mileage ?
My gas mileage slightly went up (>1-<2) and I can't verify it solely because I went CAI and free flow exhaust together

Do they ruin your car?
Maybe if a careless user doesn't read the instructions and soaks his filter in the filter additive.
A more appropriate question should be are they idiot proof?
No.
I've been running K&N's for almost 35 years. I follow the instructions and haven't had ANY AFM, MAF or other oil related problem and have a Tahoe used for towing that has 113,000 mi. trouble free. I've used them on almost all my cars.

Decide for your self just don't rush to judgment or write comments that aren't fact based.
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post #8 of 13 Old 02-14-2014, 08:10 PM
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i want to ask...
are all brand 's air filter have no obvious performance improvement ????
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post #9 of 13 Old 02-17-2014, 10:10 AM
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Quote:
Originally Posted by justyou View Post
i want to ask...
are all brand 's air filter have no obvious performance improvement ????
If your engine's intake system is designed well and the old filter is not clogged, then a "different" filter can not help (except slightly at high RPM and full throttle).
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post #10 of 13 Old 02-19-2014, 12:58 AM
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I honestly do not see how a K & N filter would make much difference on a Diesel engine.

ERIC
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