How do you get more horse power out of a dodge 5.9 liter gas engine?

To increase horsepower in a Dodge 5.9-liter gas engine, consider upgrading the intake and exhaust systems for better airflow, such as installing a high-performance cold air intake and a less restrictive exhaust system. Tuning the engine with a performance chip or reprogramming the ECU can optimize fuel delivery and ignition timing. Additionally, upgrading components like the throttle body and fuel injectors can enhance performance. Regular maintenance, such as ensuring proper spark plug function and using high-quality fuel, also contributes to improved horsepower.