Got out to the track for the 1st time this year and the MSD Digital 6 box i'm running was on it's 6th pass when this happened.

http://s295.photobucket.com/albums/mm125/77dragraceRT/?action=view&current=DIGITAL6.mp4

I've had this unit in my car for 3yrs now but last year it started cutting out at low rpm (return road,staging lanes) but this is a 1st on WOT. I have my Kill Switch wired to the back of my alt. and my volt gauge is bouncing around 14-16 and i don't know if that is causing a problem or if it's something else?

HELP