Air Filters

[dingo]

What is the best type of air filter for my 400ex. I ride sometimes in the sand as well as the woods. I am looking at the K@N as well as the Uni. Is there better ones. Also, does the Uni give any horsepower gains.

[Pro400EXC]

Man call up KaleCo and get a airfilter By Pass kit. It adds 25hp.

You just take your filter off and put the KaleCo tube over it.

[Honda Guy]

Pro400EXC DO u have a picture of this kit? Sounds to me like your saying it wont have an airfilter at all and im sure you know that will KILL your engine.

[Tommy 17]

25 hp thats impossible... if u can't get air out of ur motor u can't get air in... i have a k&n and i love it...

[TRX250XFIRE]

25 horses does sound like a bit much, i am looking at a K+N too but i heard that they let more dirt in then outhers,

[trx400ex]

HAHA He was joking.....25 horses sounds like a bit much ....lmfao

[waldo]

read his MODS it will make sence then LOL LOL

[PsychoDave]

It took you guys that long to figure it out......LOL that web site Kaleco is so darn funny?

[Pro400EXC]

OK this kit is sweet. To get the full 25hp you need to take your silencer off, then take your airfilter off, and they send a 3inch PVC tube with 2 open ends,stick one in the airboot and the other end lets that cool air in, it sounds awsome also!

Try to get a set of Forged Khuneston Valves also, they add lots of HP!

[PsychoDave]

Hey Pro,

What is the link to that site....i lost it, and I am even a member???
Duh:confused:

[Wheelie]

Go with the K&N. As long as you keep the filter well oiled, clean, and run it with an outerwear, you won't have any problems with dirt entering your intake.

I've run mine for almost a year in some harsh conditions and have yet to find the smallest trace of dirt in the intake.:D

BTW--I've noticed that K&N now makes an oil filter for the 400ex, has anyone tried it yet?

[R-Crazy]

i run in the desert and run a k+n with lid on and no outerwares. works fine. just take good care of it!!!!!!!!!!

dave

[400MXer]

A lot of people say that you should use a foam filter for dusty riding conditions. but average riding, a k&n will work great.

[joe250]

How many horses does a k&n air filter add. Someone told me about 10, i was thinking that was a bit much.

[400MXer]

You deffinitly won't gain 10hp on a four wheeler. maybe a car or truck, but not a four wheeler. it does help though.

What kind of foam filters do you guys use. i was thinking about getting one. i have a k&n, but i want a foam filter for dusty conditions.

[Quadfather]

I remember reading in an article that a K&N gives its best performance when it is 30% dirty.

I beleive I read that in the March (last years) issue of Diertwheels. The same issue that had the 400EX pipe shootout.

No BS