Multiturbo

Multiturbo refers to the use of multiple turbochargers on a single internal combustion engine. This setup is employed to achieve higher power output and improved efficiency compared to using a single turbocharger, especially in engines with larger displacements or those requiring a broader powerband. The implementation of multiple turbos can take various forms, including sequential turbocharging and parallel turbocharging.

Sequential turbocharging utilizes two or more turbochargers of different sizes. At lower engine speeds, a smaller turbocharger spools up quickly, providing immediate boost and reducing turbo lag. As engine speed increases, a larger turbocharger takes over or works in conjunction with the smaller one, delivering higher boost pressures and maximizing power at higher RPMs. This system aims to optimize performance across a wide range of engine speeds.

Parallel turbocharging involves using two or more identical turbochargers, each responsible for a portion of the engine's cylinders, typically in a V-engine configuration where each bank of cylinders has its own turbocharger. This approach is often seen in V6 or V8 engines, where it helps to reduce the overall size and complexity of the turbo system for each bank, while still providing significant power gains. Both sequential and parallel multiturbo systems are designed to overcome the limitations of single turbochargers, such as turbo lag and the inability to efficiently provide boost across the entire operating range of the engine.