View single post by Greg Fletcher
 Posted: 10-17-2013 04:17 pm
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Greg Fletcher

Joined: 03-11-2005
Location: Lake Nacimiento, California USA
Posts: 422
Contrary what many owners would like to believe and indeed what one might assume, dyno tests have shown that the factory air box will actually increase airflow and HP slightly over the K&N air filters on the JH.