Does anyone know if there is any real increase in HP using supertrapp slipons and a K&N Filter?
NightStar · Riding the Rev Joined Sep 3, 2007 · 1,523 Posts Discussion Starter • #1 • Oct 19, 2007 Does anyone know if there is any real increase in HP using supertrapp slipons and a K&N Filter?
NightStar · Riding the Rev Joined Sep 3, 2007 · 1,523 Posts Discussion Starter • #2 • Oct 19, 2007 Anyone?
