To begin with, for us CMMI is a myth and hence we are hesitant to embark on our improvement journey using the CMMI framework. So far, we heard that CMMI models were successfully adopted in software industry, with measurable benefits. After getting to know about CMMI and specifically on the benefits that CMMI v 2.0 brings in we decided to adopt the CMMI model for our product/project development which has Hardware, Firmware and Software components tightly integrated. This paper presents a case study where we successfully adopted the CMMI framework to improve our Project management, Engineering and Support practices thus enabling delivery excellence and increased productivity in our projects.