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View Full Version : UNI or K&N


MidnightBlade
12-08-2009, 03:51 PM
im getting a new airfilter and just confused on what is better in the airfilter world but im getting an outerweras airbox lid and an outerwears filter cover no matter what so any info would be nice ill take whatever you got to tell me
honda400ex2003
12-08-2009, 04:01 PM
lets fire it up again boys :rolleyes: sorry about that. this is beat to death and always starts a good war amongst the normally peaceful society of A.A.D.S. members in the 400 forum. lol. my vote is for k&n by the way. steve
12-08-2009, 04:17 PM
K&N's have better flow, but more flow=less filtration.

K&N's on cars, Foam on quads. The foam quad filters have large surface areas to make up for the lost flow and filter better.
MidnightBlade
12-08-2009, 04:20 PM
thanks and i know soeone who drag races and he runs kn on his racers and uni and kn on his 6-8 other trail quads but he likes both he said kn for racing uni for trail cause it has about the same performance gains for 1/2 the price
honda400ex2003
12-08-2009, 04:27 PM
with either one i suggest running a k&n outerwears then it helps with the dirt and helps with water too. steve
MidnightBlade
12-08-2009, 04:32 PM
ya im deffinately getting the pre filter
alex10
12-08-2009, 05:24 PM
I like foam filters. I run a moose on my 300 and had a UNI on my old 400.
hypersnyper6947
12-09-2009, 10:29 AM
UNI for sure k&n has POOR filtration. I have pics to prove it.
riotact
12-09-2009, 10:33 AM
I have the UNI but would like to give the K&N a shot.
hypersnyper6947
12-09-2009, 10:44 AM
Originally posted by riotact
I have the UNI but would like to give the K&N a shot.

here is a pic of the inside of my air boot after riding in some pretty dusty conditions. This is with the K&N properly cleaned and oiled with an outerwears on.

http://i74.photobucket.com/albums/i276/aclasson86/DSC06740.jpg

This is a pic of the air boot after riding at the same place for the same amount of time in the same if not dustier conditions with the properly cleaned and oiled UNI with NO outerwears.

http://i74.photobucket.com/albums/i276/aclasson86/DSC06837.jpg

that one dirty spot is where i prob missed when wiping it out from the K&N and the big pieces just fell in when removing the filter.

Still want to give K&N a try???
riotact
12-09-2009, 10:59 AM
:eek2: Nice maby I'll try the twin air one next then.