technical fogger nozzles components and accessories efi wet dry systems original fogger and fogger2 nozzles the original patented nos fogger nozzle revolutionized the way nitrous oxide and fuel were dispersed into an engine and to this day there s nothing better than it for a variety of applications however as engine displacements got bigger cylinder head designs got better and camshafts technology advanced it became evident that greater precision was needed and nos developed the fogger2 nozzle its unique flow design provides superior atomization of supplemental fuel as well as more even fuel ...