Xr400 Help! Please read ASAP!!

[fred_durst]

Hello

I currently put in a Vortip exhast, Uni air filter, and removed the airbox snorkel on my 2001 Xr400.

Now I need to re-jet. What do you guys think I will need. I'm about 2800 meters above sea level in dry semi-hot conditions (10-30 degres celcius) What sounds about right? Thanx!!

 

[fred_durst]

Also, I am going to weld the molds off in the head of the pipe. Will this force me to change my jetting settings?

 

[motoyoyo]

Check with www.bajadesigns.com they have all the carb mods you will need. They helped me out with my '97 XR400 jetting and it works great. My guess is that it won't need much, maybe just a small increase in pilot jet and main jet. The earlier models require a new jet needle, but I think the 2000 and newer already have it.