thanx guys, but im not sure if thats a no, or a go...... i ride around at 8000 rpms all the time. yes. however, im trying to grasp some better 1/4 mile times.... i realize that gutting my cat wont get me there, but i will be inhaling more soon. normally aspirated for now. therefor i would assume that i should be exhaling more also...??..... keep um cummin guys uve helped out a lot..