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1StockF30 or Andre, is now fully built motor with upgraded turbo.
If you are a 340i with stage 2 tune including DP, it'll be 50/50 outcome but favoring M3.
The only way to get ahead of the M3 is with the following mods..
XHP Tune
HPFP
E50 custom blend tune
Catless DP
MHD or BM3 with custom tune (no can)
Spark Plugs (Gapped)
Stock Turbo
However, once you upgrade turbo then the landscape changes dramatically with the mods above.
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