zwhb02

Just had fast 90 intake, 90mm throttle body, 85mm maf installed and tuned runs great and idles great for the most part but seems to idle rough at times, drops rpm from 800 to 500 back and forth then will eventually smooth out any ideas whats going on here. Also sometimes it will start then imediatly die and has to be restarted several times to keep it running. Any help or ideas appreciated.