So I just rejetted my card on my 05 400ex with a 165 main jet from dyno jet and started it up after I put everything back on and it idle super high so I called them and they said I should run a 150 main jet so I changed it out and put the 150 in and I told him I started it and it idled high and he said that the main jet wouldn't matter about the idling so I read some things on line and it said it could be the throttle cable being to tight so can any one help me or might think the fix it for this

 

Haha let me just say right now that I think I'll be much help to you, anything helps and sometimes it's the dumb things that fix problems. Im not too familiar with jetting but I don't believe it effects the idle... Instead of pushing the throttle in pull it out a bit (so if it is "tight" you're "decelerating" it) it might throw the idle down. If it lowers then you know it's the throttle. Hope I helped. If you find out what it is I'd like to know too!

 

Thanks im going to try and loosen the handle bars throttle cable before I try to loosen it up at the carb