Rejetting

[NAPALMROLLER]

I have a 1980 xs400 special it has the bs34's with the brass floats .im rejetting for open mega phone exhuast and k&n pods .stock Jets are 42.5 (pilot) 135 (main)I'm changing to a 45 pilot and a 145 main ,so quetion is am I supposed to change out the front air jet ass well need a little help if someone can I appreciate it

 

[rshutchinson]

Just those main and pilots need to be changed.

 

[xschris]

You may need to shim the jet needle for the mid-range also.