K&N AIR FILTERS-What results have you had?
Super Moderator
Joined: Jun 2008
Posts: 19,942
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
I do not like K&N air filters. They do a crap job of filtering. Stay with OE.
http://home.roadrunner.com/~jbplock/ISO5011/SPICER.htm
New link ~ other down
http://www.nicoclub.com/archives/kn-vs-oem-filter.html
http://home.roadrunner.com/~jbplock/ISO5011/SPICER.htm
New link ~ other down
http://www.nicoclub.com/archives/kn-vs-oem-filter.html
Last edited by Glyn M Ruck; Nov 14, 2014 at 07:56 AM.
Member
Joined: Aug 2013
Posts: 192
Likes: 1
2012 C 250 Sport Sedan
I do not like K&N air filters. They do a crap job of filtering. Stay with OE.
http://home.roadrunner.com/~jbplock/ISO5011/SPICER.htm
http://home.roadrunner.com/~jbplock/ISO5011/SPICER.htm
Last edited by xaran; Jan 29, 2014 at 10:58 AM.
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
I have more proprietary data by Donaldson proving the same thing that I can't publish.
If you ever get the opportunity to watch the Cummins training film "Operation Hourglass" you should take a look at just how little dirt it takes to ruin an engine. Don't mess with filtration.
If you ever get the opportunity to watch the Cummins training film "Operation Hourglass" you should take a look at just how little dirt it takes to ruin an engine. Don't mess with filtration.
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Member
Joined: Aug 2013
Posts: 192
Likes: 1
2012 C 250 Sport Sedan
I have more proprietary data by Donaldson proving the same thing that I can't publish.
If you ever get the opportunity to watch the Cummins training film "Operation Hourglass" you should take a look at just how little dirt it takes to ruin an engine. Don't mess with filtration.
If you ever get the opportunity to watch the Cummins training film "Operation Hourglass" you should take a look at just how little dirt it takes to ruin an engine. Don't mess with filtration.
Ive ridden off road bikes and ATV for 40 years and Ive seen many a engine eat itself up in 1 outing due to dirt (sand) getting into it.
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Somewhere between a heaped teaspoon & a tablespoon of dirt is all it takes for an engine to ingest & be ruined.
Junior Member
Joined: May 2013
Posts: 59
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From: Chicago, IL
2009 MB C350 Sport
I used to have modified VW jetta gli with big turbo and all the works. All in all monster that was way faster than my c350.
When it came to do the intake I had to choose what route I wanna go out of 3 options. All 3 set ups (K&N cold air intake, K&N short ram intake and modified stock) were tested on the dyno with data logging. Long story short the best results (most HP and best throttle response) were provided by modified stock set up.
Modified stock consisted of stock paper filter in stock air box in the stock location. Modification included drilling 6" hole on the bottom of the air box and routing PVC plumbing piping from Home Depot (plasti dipped black) from there to behind the lower grill in the front bumper to get as much cool air as possible. Sounds like ghetto rigging but the installation came out very clean and it provided best performance results. I don't even mention how high flow filters let in a lot of crap to the engine. That's another story. No K&N or such (basically all high flow filters) for me in a road going cars or motorcycles.
When it came to do the intake I had to choose what route I wanna go out of 3 options. All 3 set ups (K&N cold air intake, K&N short ram intake and modified stock) were tested on the dyno with data logging. Long story short the best results (most HP and best throttle response) were provided by modified stock set up.
Modified stock consisted of stock paper filter in stock air box in the stock location. Modification included drilling 6" hole on the bottom of the air box and routing PVC plumbing piping from Home Depot (plasti dipped black) from there to behind the lower grill in the front bumper to get as much cool air as possible. Sounds like ghetto rigging but the installation came out very clean and it provided best performance results. I don't even mention how high flow filters let in a lot of crap to the engine. That's another story. No K&N or such (basically all high flow filters) for me in a road going cars or motorcycles.
Last edited by ChitownBabyBenz; Jan 29, 2014 at 11:38 AM.
MBWorld Fanatic!
Joined: Dec 2003
Posts: 1,283
Likes: 126
From: Central Coast, CA
2020 X7 xDrive40i, 2016 X3 sDrive28i
The longest I've used a K&N filter in one car was 175k miles. I did not notice any real power or mileage gain during that time. Also didn't have any noticeable engine damage either. After 175k miles the engine still ran smooth as first day I got it with 6 miles on it. That's with 15k mile oil changes. Oil was tested by blackstone labs every other change. This was on a 1999 BMW 328i.
the K&N filter was washed and re-oiled every 25k miles.
the K&N filter was washed and re-oiled every 25k miles.
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
You are probably not in a very dusty environment. K&N filters simply don't filter well for most of their operation.
Thus I will under no circumstances recommend them.
Thus I will under no circumstances recommend them.
MBWorld Fanatic!
Joined: Dec 2003
Posts: 1,283
Likes: 126
From: Central Coast, CA
2020 X7 xDrive40i, 2016 X3 sDrive28i
Most of that 175k miles were driven from Massachusetts to Texas and everything in between.
Between the cost of the filter, cost of the cleaner, oil etc, I didn't see much benefit over OEM paper filters, so I've since stopped using K&N in all my other cars.
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
I used to have modified VW jetta gli with big turbo and all the works. All in all monster that was way faster than my c350.
When it came to do the intake I had to choose what route I wanna go out of 3 options. All 3 set ups (K&N cold air intake, K&N short ram intake and modified stock) were tested on the dyno with data logging. Long story short the best results (most HP and best throttle response) were provided by modified stock set up.
Modified stock consisted of stock paper filter in stock air box in the stock location. Modification included drilling 6" hole on the bottom of the air box and routing PVC plumbing piping from Home Depot (plasti dipped black) from there to behind the lower grill in the front bumper to get as much cool air as possible. Sounds like ghetto rigging but the installation came out very clean and it provided best performance results. I don't even mention how high flow filters let in a lot of crap to the engine. That's another story. No K&N or such (basically all high flow filters) for me in a road going cars or motorcycles.
When it came to do the intake I had to choose what route I wanna go out of 3 options. All 3 set ups (K&N cold air intake, K&N short ram intake and modified stock) were tested on the dyno with data logging. Long story short the best results (most HP and best throttle response) were provided by modified stock set up.
Modified stock consisted of stock paper filter in stock air box in the stock location. Modification included drilling 6" hole on the bottom of the air box and routing PVC plumbing piping from Home Depot (plasti dipped black) from there to behind the lower grill in the front bumper to get as much cool air as possible. Sounds like ghetto rigging but the installation came out very clean and it provided best performance results. I don't even mention how high flow filters let in a lot of crap to the engine. That's another story. No K&N or such (basically all high flow filters) for me in a road going cars or motorcycles.
I have proven many butt dynos wrong on a proper Schenk Chassis Dyno in a properly controlled enviroment. (temperature, humidity/air density, altitude)
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Maybe. I don't know what would be considered dusty vs not dusty.
Most of that 175k miles were driven from Massachusetts to Texas and everything in between.
Between the cost of the filter, cost of the cleaner, oil etc, I didn't see much benefit over OEM paper filters, so I've since stopped using K&N in all my other cars.
Most of that 175k miles were driven from Massachusetts to Texas and everything in between.
Between the cost of the filter, cost of the cleaner, oil etc, I didn't see much benefit over OEM paper filters, so I've since stopped using K&N in all my other cars.
