what size jets?

[05BLASTERBOY]

i have a 2005 blaster with pro circuit 304 slip on with uni stage 2 air filter. what size main jet should i use

 

[CARNZ]

start with a 300, and plug chop it, then go up or down accordingly

edit: wait, slip on? just the silencer or the pipe too?

 

[05BLASTERBOY]

thanks and what does plug chop mean

 

[CARNZ]

look up the plug chop diy on here and it will give you all the info you need.

basically it's using fresh plugs on tuning runs, then inspecting the "smoke ring" on the insulator to determine if you are rich or lean.

but read the DIY because there is more to it than that