When you upgrade the exhaust system on your Harley Davidson, it's generally recommended to tune the motorcycle's engine to optimize its performance. Here's why:
Airflow Changes: Upgrading the exhaust system can increase the airflow into and out of the engine. This altered airflow affects the fuel-to-air ratio required for optimal combustion.
Fuel Mixture: The stock engine control unit (ECU) of your Harley is set up to work with the factory exhaust system. When you install an aftermarket exhaust, it can lead to a leaner or richer fuel mixture, depending on the specific system and design.
Performance and Efficiency: Properly tuning your Harley after the exhaust upgrade ensures that the fuel delivery and ignition timing are adjusted to match the increased airflow. This helps maximize power gains, throttle response, and fuel efficiency.
Preventing Engine Issues: Running your Harley with an aftermarket exhaust without tuning can potentially cause issues such as overheating, backfiring, or engine damage due to incorrect fueling.
To tune your Harley after the exhaust upgrade, you have a few options:
Fuel Management System: Installing a fuel management system, such as a fuel tuner or power commander, allows you to adjust the fuel delivery and optimize the air-fuel mixture to match the new exhaust system.
ECU Remapping: You can also consider having your motorcycle's ECU remapped or flashed by a professional tuner. This involves reprogramming the ECU to adjust fueling and ignition timing to suit the upgraded exhaust.
It's essential to consult with an experienced Harley Davidson technician or a reputable motorcycle tuning specialist. They can assess your specific bike, exhaust system, and riding conditions to recommend the most appropriate tuning method. They will help ensure that your Harley runs optimally, maintaining performance, reliability, and longevity.