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hmf silencer without rejetting

947 Views 4 Replies 3 Participants Last post by  WP
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
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You will have to rejet.
Definately rejet. It's just too much more airflow to even run part half throttle without popping.
i just put it on and i havent rejetted yet. it seems to run great defineatly more power..
When you rejet you will have even more power.
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