I have a 2003 banshee with thunder pipes, clamp on K&N, lightened flywheel, degree key, trinity head with 21cc domes, 50:1 premix and ride in Glamis area. I have 30 pilots and 320 mains but at wot it boggs, should I try 340-350 mains next?? What about needle position, it is stock needles in stock position right now??
Thanks