When installing an aftermarket exhaust like the Red Rooster on a Royal Enfield 350 cc bike, it is highly recommended to consider carburetor tuning or fuel injection mapping adjustments. Here's why:
Air-Fuel Mixture: Aftermarket exhaust systems can alter the airflow dynamics of the engine. They typically allow for increased exhaust flow, which can affect the air-fuel mixture. If the fueling is not adjusted accordingly, it can lead to a lean or rich mixture, potentially affecting performance, fuel efficiency, and even engine longevity.
Backpressure: The stock exhaust system is designed with a specific level of backpressure that is optimized for the engine's performance. Aftermarket exhausts often have different backpressure characteristics, which can influence the engine's behavior. Proper carburetor tuning or fuel injection mapping can help optimize the backpressure and maintain the engine's performance.
Engine Response: Carburetor tuning or fuel injection mapping can help improve throttle response and overall engine performance. By adjusting the fuel delivery to match the modified exhaust system, you can optimize the power delivery and smoothness of the engine.
It's important to note that the specific tuning requirements may vary depending on the specific aftermarket exhaust system, engine configuration, and any additional modifications made to the bike. It is recommended to consult with a reputable motorcycle mechanic or tuning specialist who has experience with Royal Enfield motorcycles and aftermarket exhaust installations. They will be able to provide guidance on the specific tuning adjustments needed to ensure optimal performance and reliability.