with the throttle hang fix yes because the the pipe cap is restricting some of the air. I have the same problem that you have and it stabilzes at 750 rpm. Other than that it runs fine. How big did you drill the hole?
Irfan Rahim
irfman2000@yahoo.com
2006 Blue Nissan Sentra SE-R Spec V
Former owner of a silver 2000 Contour SE Sport ATX