These components play a crucial role in the performance and functionality of your vehicle. In this guide, we will explore what these modules are, how they work, common problems you may encounter, and where you can find reliable solutions at Flagship One, Inc. 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 t...