Changing the exhaust system on a motorcycle can potentially have an impact on its performance, but it does not automatically guarantee increased speed. Here are a few factors to consider:
Exhaust Flow: An aftermarket exhaust system can improve the flow of exhaust gases, allowing the engine to breathe more efficiently. This improved flow may result in a slight increase in horsepower and torque. However, the actual gains will depend on the specific motorcycle model, the modifications made, and the overall tuning of the engine.
Back Pressure: Motorcycle engines require a certain amount of back pressure in the exhaust system for optimal performance. If the new exhaust system reduces back pressure too much, it can negatively affect low-end torque and throttle response. It's essential to select an exhaust system that is designed to provide an appropriate balance of flow and back pressure for your specific motorcycle model.
Engine Tuning: When changing the exhaust system, it is often necessary to adjust the engine's fuel-air mixture to optimize performance. This may involve remapping the motorcycle's fuel injection or carburetor settings using tools like an Electronic Control Unit (ECU) or a Power Commander. Proper tuning ensures that the engine receives the correct air-fuel ratio, maximizing performance gains and preventing potential issues such as overheating or poor fuel economy.
Legal Considerations: It's important to check local regulations regarding aftermarket exhaust systems. Some jurisdictions have noise regulations or restrictions on modifications that may impact the legality of certain exhaust systems. Ensure that any modifications you make comply with the applicable laws and regulations.
In summary, changing the exhaust system on a motorcycle can potentially improve performance, primarily by optimizing exhaust flow. However, the actual impact on speed and overall performance will depend on various factors, including the motorcycle model, the specific modifications made, and proper engine tuning. It's recommended to consult with experts or professional mechanics who have experience with motorcycle modifications to ensure that any changes you make are appropriate for your bike.