What effect will an empty short bottle silencer have on bullet 350 cc engine?

An empty short bottle silencer on a 350cc engine will likely lead to increased noise levels and a potential loss of back pressure, which can negatively affect engine performance. The absence of proper muffling may result in a rougher idle and reduced torque at lower RPMs. Additionally, it could lead to a decrease in fuel efficiency and potentially harm the engine over time due to unregulated exhaust flow. Overall, this modification may compromise the engine's overall efficiency and longevity.