Let's discuss #2: N63 and S63 engines. From shame to perfection. What are the differences?

Опубликовано: 12 Июнь 2026
на канале: SEVEN FORCE
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Friends, welcome to the second installment of our series, "Let's Discuss." In this video, we've compared BMW N63 and S63 engines of all generations in detail—from the earliest, crude, and unreliable versions to the modern, technically advanced engines found in BMW's top-of-the-line models today. We've covered the journey from the N63B44 to the N63B44TU3, which is the basis for the world's fastest BMW M550i—and it truly deserves that title.

We showed how the N63 evolved: where BMW engineers made mistakes in the first generations, how they solved thermal management and engine life issues, and why the latest TU3 version is already very close to the S63 found in the F90 BMW M5 in terms of performance and reliability.

In the video, you'll see a direct comparison of the Stage 2 M550i against the F90 M5—and the results are truly surprising. We explained why the M550i with the tuned N63B44TU3 can be faster than the S63-equipped M5, and the technical solutions that made this possible.

We also covered in detail:
➖ the engineering differences between the N63 and S63: cooling systems and fuel delivery;
➖ the tuning potential and real limits of Stage 2;
➖ how to make the BMW M550i not just fast, but reliable with high power.

This isn't just a review, but a technical comparison of BMW engines, where we share our experience, figures, and real-world test results. If you're interested in BMW tuning, M-platforms, and real-world engineering, this video is a must-watch.

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Enjoy watching!

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