What is the best way to increase horsepower in a BMW 2 Series?

I have a BMW 2 Series and I'm looking to increase its horsepower. Should I go with an ECU remap, a cold air intake, or both? What are the potential benefits and drawbacks of each option?

In my experience, an ECU remap will give you the most noticeable increase in horsepower. However, it's important to research and choose a reputable tuner to ensure the job is done correctly. A cold air intake can also improve horsepower, but it may not be as significant as an ECU remap.

I would recommend combining both an ECU remap and a cold air intake for the best results. This will give you the most noticeable increase in horsepower and can also improve overall engine performance. Just be sure to do your research and choose high-quality parts for your BMW 2 Series.

Personally, I've found that an ECU remap alone is enough to significantly improve horsepower in my BMW 2 Series. However, make sure to choose a reputable tuner and be aware that it can void your warranty.