I had a similar problem, car would fall of and ping at the top of 2nd at the track... I could never reproduce it after cause I wasn't running it at WOT for as long (Stop, 1st, 2nd) on the street.
Mine was 2 things, Orange Ignition box (the chrome is for higher RPM) and insufficient fuel pump for demand. (good PSI, but not the volume, needed bigger line and aftermarket pump)
goodluck
JOE