I just put an LRD full exhaust on my yfz450 and i did the jetting but when i give the throttle a hard quick push so as to rev it, it bogs out and shuts off. I tried multiple different jets and even lowered the amount of air it gets, i have a k&n air filter by the way, and it still does the same. What can i do??????????

 

What jetting Main, Pilot??????????

Did you take your throttle cable apart at the carb??????????

 

Try putting an aftermarket accelerator pump cover on, this seems to help this carb.