You need the original helicopter. If almost you do not have this chopper; you can download it from the Virtavia / Freeware site or from some other sites as the AH-1W from Alphasim / Virtavia is now freeware.
It contains a new 2D panel, added effects, a real good AP and a modified aircraft.cfg.
Now with enough air between the chopper and the ground you can fly real nice displays as on airshows.
As I do not have FSX I do not know if this update will work with the FSX version.
It's to try.
Best Regards,
Michael Vader