Running no Muffler Question?

[Bssoap74]

If I am running with no muffler's will I run Lean or Rich?

 

[bikerbob]

Lean, more airflow for same amount of fuel.

 

[Bssoap74]

If i am ideling fine and running fine, should it be a problem running this way without rejetting. I have emgo shorty' s on order and really don't want to have to rejet