Horsepower Lab 1D - Version 0.96 Software package for numerical simulation ofgasdynamics phenomena in pipelined systems. HorsepowerLab 1D makes specific emphasis on modeling pistonengines gas-exchange based on prediction of wave actionin engine ductings and can be used to help analyzetuned pipe design of piston engines. Runs on Windows95/98/ME/2000/XP/2003.