Expert Support The team at Flagship One, Inc is knowledgeable and dedicated to providing exceptional customer service. Whether you need assistance with installation, programming, or troubleshooting, they are there to help every step of the way. What is an ECU? The Engine Control Unit (ECU) is a crucial component in modern vehicles that manages various engine functions, such as fuel injection, ignition timing, and emissions control. It interprets data from sensors throughout the vehicle to...