A straight-piped Harley-Davidson motorcycle can produce a loud and distinctive sound due to the absence of mufflers or other sound-dampening components. However, it's important to note that the sound level of a straight-piped Harley and a top fuel dragster can vary significantly.
Top fuel dragsters are purpose-built, high-performance vehicles designed for drag racing, featuring extremely powerful engines that can produce noise levels exceeding 130 decibels. They are among the loudest vehicles in motorsports and are typically equipped with highly tuned exhaust systems designed to maximize performance.
While a straight-piped Harley-Davidson can be loud, it's unlikely to reach the same sound intensity as a top fuel dragster. The sound produced by a top fuel dragster is typically more intense due to its high-performance engine and specialized exhaust system. However, it's worth noting that the perception of loudness can also depend on factors such as proximity to the vehicle and personal sensitivity to noise.