Anybody ever tried taking the choke plate out on a 400ex? this helps enough that you will notice much more mid rang to top end power. Just a suggestion.[img]i/expressions/face-icon-small-smile.gif[/img]

 

choke plate? what the heck is that?- and how does it boost your HP?

 

I was thinking of that but mine needs the choke to start up here.

Rot gut, it has the potential to increase hp because of eliminating restrictions in the intake system. Not only does it eliminate the small blockage of a open choke but it dosn't disturb the incoming air charge as much.

 

Yeah, it does improve airflow. Some say if you jet richer on the pilot jet the choke will never be needed. just what i heard.

 

thats some good info. i will tell my freind to do that cool!!

 

Flatrack,
I used to roadrace cycles and did all my own jetting work on the bikes as well as my quad. I never thought to do what you just posted, but it makes all the sense in the world. Turbulance through the throat of the carberator is a big deal and anything to clean that up will be extra power.

Lots of people spend hundreds of dollars on port work, aftermarket carbs, and fancy air filters with velocity stacks built in, to do the same thing.

One thing to consider, not super critical, but if your on the lean side with the jetting, more air could lean it out more. I will have to give that a try, at least for the summer months. It souldn't be a big job.

 

Hey Roadracer96 I do all my own jetting aswell and why didn't we think of this before????
This makes perfect sense
Tell how your's works out

 

tel what friend you dont know anybody with a 400ex and why dont you do it to your 400ex carb kkkiller300ex ?

 

can someone give detailed instructions of taking the choke plate out? Do I just remove the yellow choke lever and all it's connected parts?

 

I just did that to my X today and all I can say is WOW! That really works. It seems to hit harder in the mid range and pull harder too. Thanks for the great tip. All I did to get to the carb is take the front plastic, and tank off. I just unscrewed the 2 bolts holding on the plate. Took me 15min though cause i have to take the bars off since I have one piece race plastic [img]i/expressions/face-icon-small-smile.gif[/img]