Turbo engines can be louder than naturally aspirated engines, but it depends on various factors, including design, exhaust systems, and tuning. The turbocharger itself can produce a distinct whistling or whooshing sound during operation, especially when building boost. However, many modern turbo engines are designed to be more efficient and quieter, so the noise level can vary widely across different vehicles. Overall, whether a turbo engine is louder depends on the specific application and configuration.
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