I am new to this quad modding and I need some help. I have bought a used 2001 Raptor and decided to add a Yoshomira silencer to it. It is on the way, and what I need to know is what carb jetting changes I need to make. If anyone can help me, I would appreciate it.

 

They may come with the slip on. If not you can call them and ask. Or just get a K&N power kit or order a set of dynojets from dynojet themselves. As for what Dyno jet says for a stock bike with a aftermarket slip on, remove the baffles in the snorkel, install the dyno jet needles on groove 4, install the dyno jet slide springs, remove the stock main jets, install the DJ144 in left carb, DJ146 in the right carb below 3000 ft, 3000-6000ft use the DJ142/DJ144 and above 6000ft use the DJ140 in the left carb and the DJ142 in the right carb. K&N power kits give you the K&N filter along with these dynojets.

You can find this information at www.dynojet.com click on jet kits when you get there.