Hi I have a 2008 kfx 450r efi and I seem to be having some problems with bogging, and lack of power. When I run the quad it will run fine but sometimes when I restart the quad the f.i or overheating light by the bars will randomly turn on and the quad will bog, sputter, stall out, and not want to run at all even though the engine is not overheating and the fan is in working condition on the RAD. Then if I restart the quad and the light is gone it will run fine without any problems. When the quad idles it idles at its normal rmp but will start revving higher or lower without touching the throttle . Do you think this is an fuel injection problem or a cdi board problem? I can pick up a new carb with fuel injector and a new cdi for around $200 just wanting someones opinion.