The Pulse detonation Engine (PDE) research program has been started at High Speed Reacting Flow Laboratory (HiREF), Universiti Teknologi Malaysia (UTM) since 2005. The studies began with a single pulse detonation study for detailed investigation of detonation characteristics of various fuels and followed by development of repetitive PDE engine, performance study and augmentation of thrust using various types of ejectors. This paper summarizes the laboratory facilities, research activities conducted and the output from all of the related research programs.