98 WR400F Mods, tips, and tricks?

As a newbie to the 4-stroke dirt bike area, and this site, I am hoping someone can help me out with my new (to me) bike. I've heard rumor of mods that should be done to this machine in the name of performance and reliability. I have found out about the throttle stop, and and article on how to fix that. Other rumors concern a "grey wire", a breather re-route, airbox mod, etc. Can anyone provide further info, links, etc? Thanks to all for any help. ...N

Thanks for that. That's where I found out about the throttle stop. So far I can't find anything about the "gray wire" or where/how to re-route the breather. Unless I missed something, which is entirely possible. I just printed it out for further perusal. ...N

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