Does dual exhaust on a Chevy Silverado help fuel economy?

No, dual exhaust on a Chevy Silverado generally does not improve fuel economy. While some might claim minor benefits from reduced back pressure, the effect is negligible and often outweighed by other factors. The weight of the additional exhaust components and any performance modifications often associated with dual exhaust systems can actually slightly *reduce* fuel economy. The primary benefit of dual exhaust is typically improved performance and sound.