Going to buy a aftermarket air filter for my 2000 DS650. Anybody have a input or opinions on K&N vs the UNI filter. The Uni $20, and the K&N is $40. Thanks

 

i like the k&n with outer wear, but the uni fits under the seat better.

 

Ive never had a uni-filter. Arent they sponge filters ? IF they are, oiling and cleaning sponge filters is harder than a k&n. IF a uni isnt a sponge disregard but K&n has been around a long time and personnally they have never failed me. The filter is the only protection your motor has from sand and dirt so dont be cheap. A uni may be ok though im really not sure.

 

I use a K&N without the Outerwear in the stock airbox. I do a lot of riding in really dusty conditions and some mud and water too, but not deep or anything.

Is the K&N without outerwear good enough for these conditions.

 

Tirespinner,

All I have to say it's nothin but the best....... Is that good enough?[img]i/expressions/face-icon-small-wink.gif[/img]

 

yea that sounds good enough [img]i/expressions/face-icon-small-smile.gif[/img]

thanks

 

I thought I heard something about the Uni's catching fire if the carb backfires.

K&N with outerwear is what i'm running.

 

Foam are better than K&N hands down, unless you run in a must have the most HP, with no regard to engine life, situation, and a place without dust particles in the air.

heres some info on foam compared to gauze(K&N)



K&N and other gauze type filters are just another screen type that is only 1mm thick. If the dirt is not stopped on the surface, it is not stopped at all. These filters are sold on the pretense that they maintain an oil curtain for the air to pass through, thereby catching all dirt particles. It is impossible to maintain an oil curtain. The oil soaks the threads of the gauze or cloth, but does not span the openings; otherwise, the air could not get through. The dirt particles that do hit the threads have a good chance of being caught; the others simply go through. The reason the filter does not look dirty on the inside is because the dirt went into the engine. You can easily demonstrate this fact yourself by coating the inside of your housing or carb throat with a thin layer of grease to trap some of the dirt not caught by the filter or you can place a foam filter inside the gauze element to prove the same thing.

The one advantage that this type of element has over paper is greatly reduced airflow restriction; however, poor filtration efficiency is the price you pay. When dirt builds up, filtering action improves, but now the airflow is poor like paper elements.

Open Cell Filter Foam such as UNI or TWIN AIR

The development of this special foam represented a major advancement in air filtration technology. Foam air filters now combine great airflow capability, huge dust holding capacity, and very high filtration efficiency for extremely small particles.

Fully reticulated (open pore) foam is a honeycomb of tiny, interlocking cells of uniform size, which create an impossible journey for dirt particles since there are no straight-through passageways. Each passageway (16 to 25mm long) is like hundreds of very small centrifugal/oil bath filters connected one to another. In this way, foam traps and holds the particles throughout the entire volume of foam. This is why they are referred to as "full depth" filters in contrast to the paper or gauze elements, which are screens, or "surface type" filters. The cell strands stop the dirt, while the oil film holds the dirt like fly paper until removed for cleaning.

 

Uni for in the desert or really dusty conditions and a K&N in the sand.

 

i always ran k/n filters on most everything i own and really liked them. when i went to the dual carbs there was no room for the stiffer k/n so i had go with the uni's, i do not like them at all!! first having to oil them befor you put them on is a pain, then guess what happens in dusty condtions with an oiled filter [img]i/expressions/face-icon-small-disgusted.gif[/img] even with the outerwears they still get dirty fast. use the k/n with a outerwear and you will be all set[img]i/expressions/face-icon-small-smile.gif[/img]