I need help, just got my first Banshee and prior owner put on FMF pipes and Silencers, K&N Filter, boost bottle and is bored .40 over. Said he did not know anything about jetting so he left them stock. Well it does not start unless you pour gas on air filter first start of morning, then all day starts fine. Will not idle and backfires on one side when reving. Runs pretty good but I think it could run better. Like I said my first Banshee and need help.

 

I have a manual that I could try to email to you. It is in PDF format. I believe there is a section a jetting in it. Might not completely answer your questions but it will get you started. Email me a mbogosia@comcast.net and I will try to send it to you.