Goob
07-16-2009, 11:27 PM
Ok I have a 09 400x or ex I just purchased the hmf sport series full system and also the keihan jets they recommend 180/200 I really don't know what to go by and also want to know if I need to change the pilot jet I don't know much about jetting this will be my first time I also have a k and n air filter and suggestions will help