bans350ya

i just recently bought my new banshee. On my second day of owning it i bought fmf pipes and silencers for it. the i bought a UNI air filter for it. and ive been having problems getting it started and it wont idle very long after getting it started until it gets warmed up. i was wondering if this could be a jetting problem and if so how do i fix it? any advice would be greatly appreciated.