[powerslide]

my hmf silencer should be here tomorrow and i wanted to know if it will run ok with out rejetting it. i have the stock air filter and i want to keep the airbox lid on

 

[WP]

You will have to rejet.

 

[Barely Legal]

Definately rejet. It's just too much more airflow to even run part half throttle without popping.

 

[powerslide]

i just put it on and i havent rejetted yet. it seems to run great defineatly more power..

 

[WP]

When you rejet you will have even more power.