airbox lid

[03400EX_Nacs]

i see people all the time saying they run thier 400 with the airbox lid off is that ok for the motor when you are running through and open area?

[Natertot426ex]

Yes it is good for the motor. It allows you to get more air to it quicker. Just make sure you keep your filter oiled.

[sprtrx300ex]

and you must rejet.