Race car mystery-Help us solve PLEASE

Moparlaover--Had a friend along last night at test and tune who's been racing for 40 years in pro stock,He listened and watched the car at the launch and at the end of the track to see if he could hear the car break up at all during the run,to him there was no obvious carb or ignition break up in fact he said a couple times,"that dam car sounds strong" and didn't hear anything out of the ordinary.