Video: BMW 335i tuned to more than twice the power

The BMW 335i is about as affordable as performance sedans go, and is a popular choice thanks to its classic looks, sporty handling and 300 horsepower. Precision Sport Industries still wanted to see what it could do when tuned to the max, though.

After replacing most of the powertrain components with the best they could find, PSI succeeded in extracting 700 PS (690 hp / 515 kW) out of the three-liter inline-six turbo, surpassing the stock 300 PS (296 hp / 221 kW) by more than 100%. Watch the video to learn more about this amazing project and the practical implications of such extreme tuning.