I see your problem. According to the dyno, you were more leaned out when stock and running pig rich for some reason after the pulley. A good tune should solve your problem. When you get the tune, be sure to give them your dyno sheet to help them get it right for you. You should try to get her tuned with an airi/fuel ratio around 12.2-12.3. Your exhaust tips are probably all black from all that richness. Good luck!