Phil McCrackin
Member
- Aug 15, 2004
- 13
- 0
Have an '02 KDX220 with FMF Gnarley woods pipe and Powercore II silencer. Ran fantastic with stock jetting. Did the airbox mod today by cutting the snorkel tube that extends into the box and subsequently drilling 7 1/2 inch holes into the lid. Idles fine and has good power to a bit less than mid throttle, but above 1/2 to wide open, it's just flat!! It's loudly drawing air, but the acceleration is non exsistent. Is this just a main jet and possibly needle clip position issue or should the pilot jet also be considered?? Any help is greatly appreciated.