- Increased Complexity: Adding a second turbocharger increases the complexity of the engine system. It requires modifications to the exhaust system, intake system, and engine management system. This makes the installation process more difficult and expensive.
- Increased Backpressure: Adding a second turbocharger in series (one after the other) can increase exhaust backpressure. This can restrict the flow of exhaust gases and reduce the efficiency of the first turbocharger. It may also put additional strain on the engine components.
- Turbo Sizing and Matching: The sizing of the second turbocharger becomes crucial to ensure proper balance and performance. The size and characteristics of the second turbo must complement those of the first turbo to avoid inefficiencies or turbo lag.
- Intercooler Requirements: Adding a second turbocharger increases the heat generated in the exhaust system. This may necessitate the use of a larger or more efficient intercooler to effectively cool the compressed air before it enters the engine.
- Engine Management: The addition of a second turbocharger requires modifications to the engine management system to control boost pressure, fuel injection, and other parameters. This can introduce complexity and potential issues with tuning the engine for optimal performance.
Overall, attempting to run the exhaust from the first turbocharger to a second turbocharger is not advisable and may result in diminished performance, increased complexity, and potential reliability concerns. It is generally more effective and efficient to upgrade or optimize the existing turbocharger setup to achieve the desired performance goals.
