ZXR250 airbox?

[slopster]

I've recently purchased a zxr 250 that needed a little work to get it going. I replaced the airbox because the old one was leaking and it made a big improvement but still had some flat spots in the mid revs and felt like it was down on power in the top end. Looking at a zxr 250 manual I noticed a part of the airbox in the diagram that I don't have in my airbox. I'm not sure what it is or whether it could be cause of my problems. Can anyone identify this part. Here is the picture.

[tomtyer-drake]

where is this picture sorry?

[slopster]

whoops here it is

[tomtyer-drake]

Im gonna have to check mine to see if i have one now, it doesnt look like something iv seen

[nlpples]

if im not mistaken its a sortof metal mesh that sits in the upper side of the airbox. i couldnt tell you what it does though.

[racefactory]

yeah from memory thats the little metal mesh... shouldn't do too much in terms of air flow I would think.

Has it got an aftermarket exhaust? if so maybe it's running lean

[Ultrasonic2]

yip i have had my bike apart tonight and it is a metal mesh thing. you dont need it .