quiet core help

[wanta450]

i just got a big gun slip on and want to know if i will need to rejet when i go from having the quiet core in to having it out

[wanta450]

ttt

[wilkin250r]

As a general rule, if you ever change anything involved with the engine, always check the jetting.

[bwamos]

If you want to be lazy about it.

Jet for the core being out. Leanest condition. Then when you put it in you're jsut running a little on the rich side. It should be safe, jsut not optimal.

[Rico]

ON my HMF i had to change jetting when the quiet core was in or out..