Quote:
Originally Posted by JackMcCornack
One benefit of turbos is for a given amount of maximum horsepower potential, a turbo engine (whether diesel or spark) is lighter than a na engine. Thus everything from the engine mounts down to the tires can be lighter, and the complete system may end up with greater fuel efficiency even if the engine might be less efficient.
Also, regarding the additional exhaust backpressure of a turbo reducing efficiency, that is balanced to some extent by the reduction in exhaust noise. Turbo engines can get away with lesser mufflers than na engines for a given amplitude of exhaust noise. My own miniature turbo diesel sports car (32 hp Kubota) uses the turbo as its only muffler and it's never had a noise complaint (people assume it has a conventional muffler).
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I ran my dodge strait pipe and there wasn't much of that. Exited right after front tire on the side.
A turbo setup really needs to be setup correctly otherwise it can lower efficiency as well.
But man does a s400 sound like a jetliner on takeoff when it lights under a s300. But yeah a turbo counts as a muffler in a lot of states cause the turbine does a marvelous job of breaking up sound.