How to increase the horsepower of a BMW M5?

I recently bought a BMW M5 and I'm looking for ways to increase its horsepower. I've heard about ECU tuning and performance exhaust systems but I'm not sure which one would be better. Does anyone have any recommendations or tips on how to increase the horsepower of my BMW M5?

First, let me congratulate you on your purchase of a BMW M5. It's a powerful and impressive car. As for increasing its horsepower, there are a few things you can do. You mentioned ECU tuning and performance exhaust systems, and both can have a significant impact on the horsepower of your car. However, it's important to note that these modifications can also void your car's warranty, so make sure to do your research and consult with a professional before making any changes.

In addition to ECU tuning and performance exhaust systems, you can also consider upgrading your car's air intake and fuel system. This can help improve the engine's airflow and fuel delivery, resulting in increased horsepower and overall performance. Again, I'd recommend seeking the advice of a professional before making any modifications to your car.

Another way to boost your BMW M5's horsepower is by installing a turbocharger or supercharger. These can increase the amount of air being fed into the engine, resulting in more power. However, these modifications can be costly and may require additional modifications to your car's engine and cooling system. Make sure to do thorough research and consult with a trusted mechanic before proceeding.