How can I maximize the horsepower of my BMW M9 engine?

I've been thinking about upgrading my BMW M9 engine to get the most out of it. Are there any specific modifications or tuning techniques that I should consider?

You can start by installing a cold air intake or a performance-oriented exhaust system. These upgrades can help increase the airflow and therefore, improve the horsepower output of your BMW M9's engine.

Another way to gain more horsepower is by using a performance chip or a piggyback ECU. These devices can remap your engine's fuel and timing curves, resulting in more power and torque.

Upgrading your car's intercooler can also help boost its horsepower. A bigger and more efficient intercooler can reduce the air intake temperature and improve the engine's performance.