Hey there, just wondering if anyone has there yfz450 currently set up without the airbox lid, and without the baffle. I was kind of curious what kind of jetting you are running or if you even had to change it. And also, ...what you would say I am going to have to run at 2500ft . It really shouldnt be that much of a change. -Is it just the pilot, or do you gotta change the main for this configuration?
Thanks!

 

I think everyone that I need to talk to is in bed. Have to wait till morning.

 

I havn't rode mine seriously yet, but rode w/ the baffle and w/o and there is a bit difference. I took off the lid and didn't notice much....but I havn't played w/ my jetting yet. The sales guy says they are just adjusting the air intake and not rejetting and that seems to work....I'm at 4000 ft.

 

Thanks, I'll try that first. It seems to me though, if you do take off the lid, that you will have to rejet. Thats a huge increase in airflow. We'll see I guess.

 

Might as well re-jet, it's inexpensive and easy....I'm going to wait till I pipe mine and buy a k&n.

 

If you go to dyno sheets They were using a 170 main. I dont know what stock is havent went there yet but that is something to start with..