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Recently installed the JB4 from Burger Tuning on my M340 (xdrive). Been running Map 1 & 2 for a few days. Initial thoughts on tune:
1. Super easy to install. I'm not much a DIY'er but with a couple YouTube videos it was a piece of cake.
2. Blue tooth adapter with iOS App = A+. Real time feed with the gauges is a very cool, and the ability to change maps and settings on the fly is impressive.
3. Power (even in Map 1) is serious. Instant power all through the bands; seamless shifting.
4. Ability to uninstall the tune when going in for a service; 👌🏽
Conclusion: If you're looking for a piggy back tune, this seems to be a great option. Very happy with the investment so far.
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2022 X3M Comp
2020 M340 - Sold
2010 328i - Sold
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