Removed intake block-off,and adding D&D Y pipe. To a 08 f-8 S.P. Have heard about 1000s,and running premium gas. Also shouldnt running wide open for long distances. What about f-8s. Long distance is what i like to do,at high speeds. Never worried about being tight to the bar for 20 miles, or had any problems. So am I asking for a melt down? Anyone have this set up, and hauled the mail for several miles.