Congrats.
I also flashed STG1 for my M2C friend. Power is massive. It feels and is stronger than my turbo upgraded N55 M2, pump gas for pump gas. Though I'm positive S55 STG1 has less headroom to deal with environment variance, boosting 22~23psi, compared to 17psi that I am running.
It's a blessing BMW did all the hardware work with S55 and a tune alone gets you wherever you desire with sanity for F8X platform.
Robin_NL All BM3 maps are technically Europe sourced. Halim is a Copenhagen. Test with local car and port over to USA. My car is Euro spec and has been working great on his tune, for two year.
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Lemania 2320
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