Airbox mod

[ericf7]

I just bought a 2003 kdx220 and am beginning mods soon. Would you guys recommend drilling the airbox( have seen recommendations for five 1" holes in lid) or removing lid altogether. If I remove lid , where and how is the best way to mount the electrical unit that is mounted on the lid? thanx

 

[23jayhawk]

Seems like a couple/three holes should be more than enough. At the end of the day all that air has to go through a 1 3/8" carb venturi.

 

[Tom Ludolff]

I just cable tied (zip tied) the thing to the frame. Haven't had any problems.

 

[Smit-Dog]

I tossed the snorkle and cut out the entire raised section towards the rear of the lid. Left about a 4"x3" hole. If you do this, you don't have to relocate the igniter box, it opens the airbox up quite a bit more, and still offers some level of protection from water.

 

[RTL]

Ditto on Smit-Dog.

Hey Eric, where in TN are you located?

 

[ericf7]

memphis

 

[MUDMAX]

I drilled about 30 3/8" holes in the raised section. Looks like a screen and works good.

 

[fast 200]

you can also cut a 3x4 hole in your lid then cut a 3 1/2 x4 1/2 piece of k&n outer ware over it with velco on lid and k&n outer to hold it on works good. all the air you want in and no dirt . it just that easy.......:)

 

[BRush]

Here's what mine looks like:

http://ourworld.compuserve.com/homepages/rushbe/airboxmod.jpg

 

[Canadian Dave]

Most people will follow the same technique as BRush with good results. I prefer this method because you don't have to relocate the CDI.

David

 

[BucKat]

If you're worried about dirt getting into the air box ,,,try this.
Cut a piece of panty hose(nylons) to size and strech it tightly over the open air box.
This will prevent any dirt from getting in and will act as a drum skin bouncing off any dirt.
Also acts as a pre filter.

Cheers
Joe

 

[KDXFreestyle]

The nylon thing sounds like a reallyt good idea!! Im gonna try it. Mabey since I don thave the airbox mod yet, is why my bike seems to be bogging? I hope this might help!

 

[Lew]

I removed mine completely. This way I have the option of putting it back stock should the need arise. You can relocate the cdi to the cross member. There is already a tapped whole and reuse the bolt from the original location. I did place some rubber faucet washers under it to reduce vibration.
Lew