is my jetting off?

[eastside 400]

its like in between 10-30 degrees here and my 450r wont idle and it has a a wierd 'sputter' at 1/4 throttle, i have a 400ex sparks filter and a HRC end cap, u guys think i need to rejet or is something wrong? my guess is 100% jetting but winters almost over and im putting a sparks on after winter so i dont really feel like doing it for a month or two of riding

Originally posted by eastside 400
a month or two of riding if it is indeed engine jetting this could harm your engine bad

[KEVIN]

just change the main it takes 5 minutes if you change anything of course it will affect you jets:eek2:

[eastside 400]

i kno it affects everything but im not going to ride it, i put herrmannracing graphics on and my maier hood so ill wait till my pipe comes and jet then