Hesitating

[stock350raptor]

my 450 has started to hesititate from a idle to throttle. What Could this be?

[fox17]

improper jetting? i dont know. mine is kinda like that too when you get on it hard. we had a drz that did that too. neither are jetted for the mods they have. i have the jet kit for the yfz but am waitin for the exhaust.

[tltcracing]

i would say jetting also. pobly pilots need a change.

[440racer66]

air filter not being clean my yfz does it when my cleaner is cloged