In this video, I take you on a journey through one of the most ambitious projects I’ve ever tackled—swapping out the B48 engine in my 2019 BMW 330i for the legendary Gen 2 B58. But this isn’t your typical M340i clone. I’ve built something entirely unique, incorporating a two-port B58 engine, a larger torque converter from the B46D, and custom tuning to create a car that’s raw, aggressive, and perfectly suited to my vision of the ultimate G20.
This build is more than just an upgrade—it’s a celebration of BMW’s engineering, a tribute to enthusiasts who dare to push boundaries, and a roadmap for anyone curious about what it takes to transform a modern BMW into something truly special.
🎥 Highlights in this video include:
The dramatic first start of the new engine.
A detailed breakdown of the differences between the two-port B58 and the six-port engine.
How the larger torque converter enhances throttle response and low-speed performance.
My reflections on why the 2020 M340i served as inspiration but not the blueprint.
Driving impressions and the raw sound of the new setup in action.
If you’ve ever wondered what it’s like to swap engines on a modern BMW—or if you’re curious about how the Gen 2 B58 compares to other engines in BMW’s lineup—this is the video for you.
🔧 Have questions about the build? Drop them in the comments—I’d love to hear your thoughts!
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