Originally Posted by Westcoast996

Does anyone know whether the size or number of holes drilled in to the factory box to mimic the motorsound box makes a difference in sound and or sound level? My factory box is drilled but just two HUGE holes (almost completely cut away) and not to motorsound spec. The sound (combined with Mille Miglia mufflers) has a drone to it that has me questioning whether I should try the facotry motorsound box or go back to enclosed factory airbox?????

Thanks!