kellywellz
Member
- Dec 16, 2008
- 4
- 0
I just bought a 04 yzf250 it has a fmf factory for full exhaust im not sure if the guy rejetted it after but if its idle or at low rpms when i give it gas it hessitates, will i need to reject it or can i just adjust the air/fuel screw? Also there is a dial on the bottom of the car that says "3" on it the owner said i could adjust at different altitudes. Let me know, thanks.